docs: Use HTTPS URLs

README.rst

@@ -1,5 +1,5 @@
-.. image:: https://travis-ci.org/wireservice/leather.png
-    :target: https://travis-ci.org/wireservice/leather
+.. image:: https://github.com/wireservice/leather/workflows/CI/badge.svg
+    :target: https://github.com/wireservice/leather/actions
     :alt: Build status
 
 .. image:: https://img.shields.io/pypi/dw/leather.svg
@@ -26,6 +26,6 @@ Get it?
 
 Important links:
 
-* Documentation:    http://leather.rtfd.io
+* Documentation:    https://leather.rtfd.io
 * Repository:       https://github.com/wireservice/leather
 * Issues:           https://github.com/wireservice/leather/issues

docs/about.rst

@@ -9,7 +9,7 @@ Why leather?
 * Optimized for exploratory charting.
 * Produces scale-independent SVG charts.
 * Completely type-agnostic. Chart your data, whatever it is.
-* Designed with `iPython <http://ipython.org/>`_, `Jupyter <https://jupyter.org/>`_ and `atom/hydrogen <https://atom.io/packages/hydrogen>`_ in mind.
+* Designed with `iPython <https://ipython.org/>`_, `Jupyter <https://jupyter.org/>`_ and `atom/hydrogen <https://atom.io/packages/hydrogen>`_ in mind.
 * Pure Python. No C dependencies to compile.
 * MIT licensed and free for all purposes.
 * Zealously `zen <https://www.python.org/dev/peps/pep-0020/>`_.

docs/examples.rst

@@ -18,7 +18,7 @@ Table from csv.reader
 
 Sequence row data, such as is returned by :func:`csv.reader` can be accessed by specifying the indices of the columns containing the :code:`x` and :code:`y` values.
 
-Note that leather does not automatically convert numerical strings, such as those stored in a CSV. If you want that you'll need to use a smarter table reader, such as `agate <http://agate.rtfd.io/>`_
+Note that leather does not automatically convert numerical strings, such as those stored in a CSV. If you want that you'll need to use a smarter table reader, such as `agate <https://agate.rtfd.io/>`_
 
 .. literalinclude:: ../examples/csv_reader.py
     :language: python

docs/install.rst

@@ -36,10 +36,10 @@ leather supports the following versions of Python:
 
 * Python 2.7
 * Python 3.3+
-* `PyPy <http://pypy.org/>`_
+* `PyPy <https://www.pypy.org/>`_
 
 It is tested primarily on OSX, but due to its minimal dependencies it should work on both Linux and Windows.
 
 .. note::
 
-    `iPython <http://ipython.org/>`_ or `Jupyter <https://jupyter.org/>`_ user? Leather works great there too.
+    `iPython <https://ipython.org/>`_ or `Jupyter <https://jupyter.org/>`_ user? Leather works great there too.

setup.py

@@ -11,7 +11,7 @@
     long_description_content_type='text/x-rst',
     author='Christopher Groskopf',
     author_email='chrisgroskopf@gmail.com',
-    url='http://leather.readthedocs.io/',
+    url='https://leather.readthedocs.io/',
     license='MIT',
     classifiers=[
         'Development Status :: 3 - Alpha',