diff --git a/doc/CHANGES.md b/doc/CHANGES.md
index 5a167a2fd..61bb574c7 100644
--- a/doc/CHANGES.md
+++ b/doc/CHANGES.md
@@ -138,7 +138,7 @@ also now cache each column layout so you can go back to say 12 column and not lo
 - `'auto'` value for `cellHeight` option
 - fix `setStatic` method
 - add `setAnimation` method to API
-- add `setGridWidth` method ([#227](https://github.com/gridstack/gridstack.js/issues/227))
+- add `setColumn` method ([#227](https://github.com/gridstack/gridstack.js/issues/227))
 - add `removable`/`removeTimeout` *(experimental)*
 - add `detachGrid` parameter to `destroy` method ([#216](https://github.com/gridstack/gridstack.js/issues/216)) (thanks @jhpedemonte)
 - add `useOffset` parameter to `getCellFromPixel` method ([#237](https://github.com/gridstack/gridstack.js/issues/237))
@@ -149,45 +149,45 @@ also now cache each column layout so you can go back to say 12 column and not lo
 ## v0.2.4 (2016-02-15)
 
 - fix closure compiler/linter warnings
-- add `static_grid` option.
-- add `min_width`/`min_height` methods (Thanks to @cvillemure)
+- add `staticGrid` option.
+- add `minWidth`/`minHeight` methods (Thanks to @cvillemure)
 - add `destroy` method (Thanks to @zspitzer)
-- add `placeholder_text` option (Thanks to @slauyama)
-- add `handle_class` option.
-- add `make_widget` method.
+- add `placeholderText` option (Thanks to @slauyama)
+- add `handleClass` option.
+- add `makeWidget` method.
 - lodash v 4.x support (Thanks to @andrewr88)
 
 ## v0.2.3 (2015-06-23)
 
 - gridstack-extra.css
 - add support of lodash.js
-- add `is_area_empty` method
+- add `isAreaEmpty` method
 - nested grids
-- add `batch_update`/`commit` methods
+- add `batchUpdate`/`commit` methods
 - add `update` method
 - allow to override `resizable`/`draggable` options
 - add `disable`/`enable` methods
-- add `get_cell_from_pixel` (thanks to @juchi)
+- add `getCellFromPixel` (thanks to @juchi)
 - AMD support
 - fix nodes sorting
 - improved touch devices support
-- add `always_show_resize_handle` option
+- add `alwaysShowResizeHandle` option
 - minor fixes and improvements
 
 ## v0.2.2 (2014-12-23)
 
 - fix grid initialization
-- add `cell_height`/`cell_width` API methods
+- add `cellHeight`/`cellWidth` API methods
 - fix boolean attributes ([#31](https://github.com/gridstack/gridstack.js/issues/31))
 
 ## v0.2.1 (2014-12-09)
 
 - add widgets locking ([#19](https://github.com/gridstack/gridstack.js/issues/19))
-- add `will_it_fit` API method
+- add `willItFit` API method
 - fix auto-positioning ([#20](https://github.com/gridstack/gridstack.js/issues/20))
 - add animation (thanks to @ishields)
 - fix `y` coordinate calculation when dragging ([#18](https://github.com/gridstack/gridstack.js/issues/18))
-- fix `remove_widget` ([#16](https://github.com/gridstack/gridstack.js/issues/16))
+- fix `removeWidget` ([#16](https://github.com/gridstack/gridstack.js/issues/16))
 - minor fixes
 
 
@@ -196,7 +196,7 @@ also now cache each column layout so you can go back to say 12 column and not lo
 - add `height` option
 - auto-generate css rules (widgets `height` and `top`)
 - add `GridStackUI.Utils.sort` utility function
-- add `remove_all` API method
+- add `removeAll` API method
 - add `resize` and `move` API methods
 - add `resizable` and `movable` API methods
 - add `data-gs-no-move` attribute
diff --git a/karma.conf.js b/karma.conf.js
index 05d9e2a4a..44488756c 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -16,7 +16,6 @@ module.exports = function(config) {
     // list of files / patterns to load in the browser
     files: [
       'node_modules/jquery/dist/jquery.min.js',
-      'node_modules/core-js/client/shim.min.js',
       'src/gridstack.js',
       'dist/jquery-ui.min.js',
       'src/gridstack.jQueryUI.js',
diff --git a/spec/gridstack-spec.js b/spec/gridstack-spec.js
index 72190ae5e..be2e1d20f 100644
--- a/spec/gridstack-spec.js
+++ b/spec/gridstack-spec.js
@@ -292,7 +292,7 @@ describe('gridstack', function() {
       expect(grid.opts.column).toBe(12);
       grid.setColumn(12);
       expect(grid.opts.column).toBe(12);
-      grid.setGridWidth(12); // old API
+      grid.setGridWidth(12); // old 0.5.2 API
       expect(grid.opts.column).toBe(12);
     });
     it('should SMALL change column number, no relayout', function() {
@@ -575,403 +575,6 @@ describe('gridstack', function() {
     });
   });
 
-  describe('grid method obsolete warnings', function() {
-    beforeEach(function() {
-      document.body.insertAdjacentHTML('afterbegin', gridstackHTML);
-    });
-    afterEach(function() {
-      document.body.removeChild(document.getElementById('gs-cont'));
-    });
-    it('should log a warning if set_static is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.set_static(true);
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `set_static` is deprecated as of v0.2.5 and has been replaced with `setStatic`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _set_static_class is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._set_static_class();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_set_static_class` is deprecated as of v0.2.5 and has been replaced with `_setStaticClass`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if is_area_empty is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.is_area_empty(1, 1, 1, 1);
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `is_area_empty` is deprecated as of v0.2.5 and has been replaced with `isAreaEmpty`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if batch_update is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.batch_update();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `batch_update` is deprecated as of v0.2.5 and has been replaced with `batchUpdate`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if get_cell_from_pixel is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var pixel = {top: 100, left: 72};
-      grid.get_cell_from_pixel(pixel);
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `get_cell_from_pixel` is deprecated as of v0.2.5 and has been replaced with `getCellFromPixel`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if cell_width is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.cell_width();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `cell_width` is deprecated as of v0.2.5 and has been replaced with `cellWidth`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if cell_height is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.cell_height();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `cell_height` is deprecated as of v0.2.5 and has been replaced with `cellHeight`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _update_element is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._update_element();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_update_element` is deprecated as of v0.2.5 and has been replaced with `_updateElement`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if min_width is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var items = $('.grid-stack-item');
-      for (var i = 0; i < items.length; i++) {
-        grid.min_width(items[i], 2);
-      }
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `min_width` is deprecated as of v0.2.5 and has been replaced with `minWidth`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if min_height is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var items = $('.grid-stack-item');
-      for (var i = 0; i < items.length; i++) {
-        grid.min_height(items[i], 2);
-      }
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `min_height` is deprecated as of v0.2.5 and has been replaced with `minHeight`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if remove_all is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.remove_all();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `remove_all` is deprecated as of v0.2.5 and has been replaced with `removeAll`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if remove_widget is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var items = $('.grid-stack-item');
-      for (var i = 0; i < items.length; i++) {
-        grid.remove_widget(items[i]);
-      }
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `remove_widget` is deprecated as of v0.2.5 and has been replaced with `removeWidget`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if will_it_fit is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.will_it_fit(0, 0, 1, 1, false);
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `will_it_fit` is deprecated as of v0.2.5 and has been replaced with `willItFit`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if make_widget is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var items = $('.grid-stack-item');
-      for (var i = 0; i < items.length; i++) {
-        grid.make_widget(items[i]);
-      }
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `make_widget` is deprecated as of v0.2.5 and has been replaced with `makeWidget`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if add_widget is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var items = $('.grid-stack-item');
-      for (var i = 0; i < items.length; i++) {
-        grid.add_widget(items[i]);
-      }
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `add_widget` is deprecated as of v0.2.5 and has been replaced with `addWidget`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if set_animation is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid.set_animation(true);
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `set_animation` is deprecated as of v0.2.5 and has been replaced with `setAnimation`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _prepare_element is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      var items = $('.grid-stack-item');
-      for (var i = 0; i < items.length; i++) {
-        grid._prepare_element(items[i]);
-      }
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_prepare_element` is deprecated as of v0.2.5 and has been replaced with `_prepareElement`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _is_one_column_mode is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._is_one_column_mode();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_is_one_column_mode` is deprecated as of v0.2.5 and has been replaced with `_isOneColumnMode`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _update_container_height is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._update_container_height();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_update_container_height` is deprecated as of v0.2.5 and has been replaced with `_updateContainerHeight`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _update_styles is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._update_styles();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_update_styles` is deprecated as of v0.2.5 and has been replaced with `_updateStyles`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _init_styles is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._init_styles();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_init_styles` is deprecated as of v0.2.5 and has been replaced with `_initStyles`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if _trigger_change_event is called.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      grid._trigger_change_event();
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Function `_trigger_change_event` is deprecated as of v0.2.5 and has been replaced with `_triggerChangeEvent`. It will be **completely** removed in v1.0.');
-    });
-  });
-
-  describe('grid opts obsolete warnings', function() {
-    beforeEach(function() {
-      document.body.insertAdjacentHTML('afterbegin', gridstackHTML);
-    });
-    afterEach(function() {
-      document.body.removeChild(document.getElementById('gs-cont'));
-    });
-    it('should log a warning if handle_class is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        handle_class: 'grid-stack-header'
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `handle_class` is deprecated as of v0.2.5 and has been replaced with `handleClass`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if item_class is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        item_class: 'grid-stack-item'
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `item_class` is deprecated as of v0.2.5 and has been replaced with `itemClass`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if placeholder_class is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        placeholder_class: 'grid-stack-placeholder'
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `placeholder_class` is deprecated as of v0.2.5 and has been replaced with `placeholderClass`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if placeholder_text is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        placeholder_text: 'placeholder'
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `placeholder_text` is deprecated as of v0.2.5 and has been replaced with `placeholderText`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if cell_height is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cell_height: 80,
-        verticalMargin: 10
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `cell_height` is deprecated as of v0.2.5 and has been replaced with `cellHeight`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if vertical_margin is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        vertical_margin: 10
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `vertical_margin` is deprecated as of v0.2.5 and has been replaced with `verticalMargin`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if min_width is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        min_width: 2
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `min_width` is deprecated as of v0.2.5 and has been replaced with `minWidth`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if static_grid is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        static_grid: false
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `static_grid` is deprecated as of v0.2.5 and has been replaced with `staticGrid`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if is_nested is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        is_nested: false
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `is_nested` is deprecated as of v0.2.5 and has been replaced with `isNested`. It will be **completely** removed in v1.0.');
-    });
-    it('should log a warning if always_show_resize_handle is set.', function() {
-      console.warn = jasmine.createSpy('log');
-      var options = {
-        cellHeight: 80,
-        verticalMargin: 10,
-        always_show_resize_handle: false
-
-      };
-      $('.grid-stack').gridstack(options);
-      var grid = $('.grid-stack').data('gridstack');
-      expect(console.warn).toHaveBeenCalledWith('gridstack.js: Option `always_show_resize_handle` is deprecated as of v0.2.5 and has been replaced with `alwaysShowResizeHandle`. It will be **completely** removed in v1.0.');
-    });
-  });
-
   describe('grid method _packNodes with float', function() {
     beforeEach(function() {
       document.body.insertAdjacentHTML('afterbegin', gridstackHTML);
diff --git a/src/gridstack.js b/src/gridstack.js
index 959094199..f771032c3 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -22,7 +22,7 @@
   // checks for obsolete method names
   var obsolete = function(f, oldName, newName) {
     var wrapper = function() {
-      console.warn('gridstack.js: Function `' + oldName + '` is deprecated as of v0.2.5 and has been replaced ' +
+      console.warn('gridstack.js: Function `' + oldName + '` is deprecated as of v0.5.2 and has been replaced ' +
       'with `' + newName + '`. It will be **completely** removed in v1.0.');
       return f.apply(this, arguments);
     };
@@ -35,7 +35,7 @@
   var obsoleteOpts = function(opts, oldName, newName) {
     if (opts[oldName] !== undefined) {
       opts[newName] = opts[oldName];
-      console.warn('gridstack.js: Option `' + oldName + '` is deprecated as of v0.2.5 and has been replaced with `' +
+      console.warn('gridstack.js: Option `' + oldName + '` is deprecated as of v0.5.2 and has been replaced with `' +
         newName + '`. It will be **completely** removed in v1.0.');
     }
   };
@@ -248,13 +248,6 @@
     }
   };
 
-  /*eslint-disable camelcase */
-  Utils.is_intercepted = obsolete(Utils.isIntercepted, 'is_intercepted', 'isIntercepted');
-  Utils.create_stylesheet = obsolete(Utils.createStylesheet, 'create_stylesheet', 'createStylesheet');
-  Utils.remove_stylesheet = obsolete(Utils.removeStylesheet, 'remove_stylesheet', 'removeStylesheet');
-  Utils.insert_css_rule = obsolete(Utils.insertCSSRule, 'insert_css_rule', 'insertCSSRule');
-  /*eslint-enable camelcase */
-
   /**
   * @class GridStackDragDropPlugin
   * Base class for drag'n'drop plugin.
@@ -672,24 +665,12 @@
 
     this.container = $(el);
 
-    /*eslint-disable camelcase */
-    obsoleteOpts(opts, 'handle_class', 'handleClass');
-    obsoleteOpts(opts, 'item_class', 'itemClass');
-    obsoleteOpts(opts, 'placeholder_class', 'placeholderClass');
-    obsoleteOpts(opts, 'placeholder_text', 'placeholderText');
-    obsoleteOpts(opts, 'cell_height', 'cellHeight');
-    obsoleteOpts(opts, 'vertical_margin', 'verticalMargin');
-    obsoleteOpts(opts, 'min_width', 'minWidth');
-    obsoleteOpts(opts, 'static_grid', 'staticGrid');
-    obsoleteOpts(opts, 'is_nested', 'isNested');
-    obsoleteOpts(opts, 'always_show_resize_handle', 'alwaysShowResizeHandle');
     obsoleteOpts(opts, 'width', 'column');
     obsoleteOpts(opts, 'height', 'maxRow');
 
     // container attributes
     obsoleteAttr(this.container, 'data-gs-width', 'data-gs-column');
     obsoleteAttr(this.container, 'data-gs-height', 'data-gs-max-row');
-    /*eslint-enable camelcase */
 
     opts.itemClass = opts.itemClass || 'grid-stack-item';
     var isNested = this.container.closest('.' + opts.itemClass).length > 0;
@@ -1869,13 +1850,6 @@
     this.commit();
   };
 
-  // legacy call from <= 0.5.2 - use new method instead.
-  GridStack.prototype.setGridWidth = function(column, doNotPropagate) {
-    console.warn('gridstack.js: setGridWidth() is deprecated as of v0.5.3 and has been replaced ' +
-      'with setColumn(). It will be **completely** removed in v1.0.');
-    this.setColumn(column, doNotPropagate);
-  }
-
   GridStack.prototype.float = function(val) {
     // getter - returns the opts stored mode
     if (val === undefined) {
@@ -1890,84 +1864,9 @@
     }
   };
 
-  /*eslint-disable camelcase */
-  GridStackEngine.prototype.batch_update = obsolete(GridStackEngine.prototype.batchUpdate);
-  GridStackEngine.prototype._fix_collisions = obsolete(GridStackEngine.prototype._fixCollisions,
-    '_fix_collisions', '_fixCollisions');
-  GridStackEngine.prototype.is_area_empty = obsolete(GridStackEngine.prototype.isAreaEmpty,
-    'is_area_empty', 'isAreaEmpty');
-  GridStackEngine.prototype._sort_nodes = obsolete(GridStackEngine.prototype._sortNodes,
-    '_sort_nodes', '_sortNodes');
-  GridStackEngine.prototype._pack_nodes = obsolete(GridStackEngine.prototype._packNodes,
-    '_pack_nodes', '_packNodes');
-  GridStackEngine.prototype._prepare_node = obsolete(GridStackEngine.prototype._prepareNode,
-    '_prepare_node', '_prepareNode');
-  GridStackEngine.prototype.clean_nodes = obsolete(GridStackEngine.prototype.cleanNodes,
-    'clean_nodes', 'cleanNodes');
-  GridStackEngine.prototype.get_dirty_nodes = obsolete(GridStackEngine.prototype.getDirtyNodes,
-    'get_dirty_nodes', 'getDirtyNodes');
-  GridStackEngine.prototype.add_node = obsolete(GridStackEngine.prototype.addNode,
-    'add_node', 'addNode, ');
-  GridStackEngine.prototype.remove_node = obsolete(GridStackEngine.prototype.removeNode,
-    'remove_node', 'removeNode');
-  GridStackEngine.prototype.can_move_node = obsolete(GridStackEngine.prototype.canMoveNode,
-    'can_move_node', 'canMoveNode');
-  GridStackEngine.prototype.move_node = obsolete(GridStackEngine.prototype.moveNode,
-    'move_node', 'moveNode');
-  GridStackEngine.prototype.get_grid_height = obsolete(GridStackEngine.prototype.getGridHeight,
-    'get_grid_height', 'getGridHeight');
-  GridStackEngine.prototype.begin_update = obsolete(GridStackEngine.prototype.beginUpdate,
-    'begin_update', 'beginUpdate');
-  GridStackEngine.prototype.end_update = obsolete(GridStackEngine.prototype.endUpdate,
-    'end_update', 'endUpdate');
-  GridStackEngine.prototype.can_be_placed_with_respect_to_height =
-    obsolete(GridStackEngine.prototype.canBePlacedWithRespectToHeight,
-      'can_be_placed_with_respect_to_height', 'canBePlacedWithRespectToHeight');
-  GridStack.prototype._trigger_change_event = obsolete(GridStack.prototype._triggerChangeEvent,
-    '_trigger_change_event', '_triggerChangeEvent');
-  GridStack.prototype._init_styles = obsolete(GridStack.prototype._initStyles,
-    '_init_styles', '_initStyles');
-  GridStack.prototype._update_styles = obsolete(GridStack.prototype._updateStyles,
-    '_update_styles', '_updateStyles');
-  GridStack.prototype._update_container_height = obsolete(GridStack.prototype._updateContainerHeight,
-    '_update_container_height', '_updateContainerHeight');
-  GridStack.prototype._is_one_column_mode = obsolete(GridStack.prototype._isOneColumnMode,
-    '_is_one_column_mode','_isOneColumnMode');
-  GridStack.prototype._prepare_element = obsolete(GridStack.prototype._prepareElement,
-    '_prepare_element', '_prepareElement');
-  GridStack.prototype.set_animation = obsolete(GridStack.prototype.setAnimation,
-    'set_animation', 'setAnimation');
-  GridStack.prototype.add_widget = obsolete(GridStack.prototype.addWidget,
-    'add_widget', 'addWidget');
-  GridStack.prototype.make_widget = obsolete(GridStack.prototype.makeWidget,
-    'make_widget', 'makeWidget');
-  GridStack.prototype.will_it_fit = obsolete(GridStack.prototype.willItFit,
-    'will_it_fit', 'willItFit');
-  GridStack.prototype.remove_widget = obsolete(GridStack.prototype.removeWidget,
-    'remove_widget', 'removeWidget');
-  GridStack.prototype.remove_all = obsolete(GridStack.prototype.removeAll,
-    'remove_all', 'removeAll');
-  GridStack.prototype.min_height = obsolete(GridStack.prototype.minHeight,
-    'min_height', 'minHeight');
-  GridStack.prototype.min_width = obsolete(GridStack.prototype.minWidth,
-    'min_width', 'minWidth');
-  GridStack.prototype._update_element = obsolete(GridStack.prototype._updateElement,
-    '_update_element', '_updateElement');
-  GridStack.prototype.cell_height = obsolete(GridStack.prototype.cellHeight,
-    'cell_height', 'cellHeight');
-  GridStack.prototype.cell_width = obsolete(GridStack.prototype.cellWidth,
-    'cell_width', 'cellWidth');
-  GridStack.prototype.get_cell_from_pixel = obsolete(GridStack.prototype.getCellFromPixel,
-    'get_cell_from_pixel', 'getCellFromPixel');
-  GridStack.prototype.batch_update = obsolete(GridStack.prototype.batchUpdate,
-    'batch_update', 'batchUpdate');
-  GridStack.prototype.is_area_empty = obsolete(GridStack.prototype.isAreaEmpty,
-    'is_area_empty', 'isAreaEmpty');
-  GridStack.prototype.set_static = obsolete(GridStack.prototype.setStatic,
-    'set_static', 'setStatic');
-  GridStack.prototype._set_static_class = obsolete(GridStack.prototype._setStaticClass,
-    '_set_static_class', '_setStaticClass');
-  /*eslint-enable camelcase */
+  // legacy method renames
+  GridStack.prototype.setGridWidth = obsolete(GridStack.prototype.setColumn,
+    'setGridWidth', 'setColumn'); // 0.5.3
 
   scope.GridStackUI = GridStack;