0.23.0

Backward incompatible changes:

• Refactored the observeChanges plugin. We have removed properties hot.observedData and hot.observeChangesActive #3213
• Added an allowEmpty option (true by default) which unifies the validators' behavior. Now both numeric and date cell types accept empty values. #2662
• Fixed shifting cell meta when user wants to insert a new row or a column #1823

Changes:

• Added a new functionality for the fillHandle option to prevent creating new rows when dragging down the fill handle #2874
• Fixed a problem with SampleGenerator class which was transforming every value into a string. Because of that the row's height and width were incorrectly calculated #3248
• Fixed calling the sort method not being reflected in the sort indicator #3245
• Fixed the maxDate property which specified in datePickerConfig didn't work in Pikaday #3225
• Fixed AutoColumnSize which wasn't adjusting the columns' width properly when data was pasted into them #3223
• Fixed the scrollbar that jumped back a few pixels causing a "flickering" effect #3204
• Fixed updating ContextMenu items by calling updateSettings #3191
• Fixed the dropdown/context menu issues that caused its wrong rendering when hovered or near the window's edge #3125
• Fixed an issue with two rows being pasted instead of just one inside the Angular 2 application #3123
• Fixed null document.activeElement that was causing an error in Internet Explorer #2705
• Fixed sort indicator showing an incorrect data order #2676