Update changelog

 - Add the changes for the upcoming release
 - Add "thanks" to previous pull request submitters
 - Remove period on all bullet-points

1 files changed, 127 insertions, 121 deletions

diff --git a/docs/changelog.rst b/docs/changelog.rst
index c9a8906..363ae12 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -3,89 +3,95 @@
 Changelog
 ---------
 
+XX-XX-XXXX v. X.X.X
++++++++++++++++++++
+
+   - Removal of Python 2.6 and 3.3 compatibility (thanks @jdufresne)
+   - Documentation, packaging, and CI cleanup (thanks @jdufresne)
+
 09-09-2018 v. 5.4.1
 +++++++++++++++++++
 
-   - Fix error in a newly added test.
-   - Changed code format and quality checking infrastructure.
+   - Fix error in a newly added test
+   - Changed code format and quality checking infrastructure
 
 09-06-2018 v. 5.4.0
 +++++++++++++++++++
 
    - Re-expose ``natsort_key`` as "public" and remove the
-     associated ``DepricationWarning``.
-   - Add better developer documentation.
-   - Refactor tests.
-   - Bump allowed ``fastnumbers`` version.
+     associated ``DepricationWarning``
+   - Add better developer documentation
+   - Refactor tests
+   - Bump allowed ``fastnumbers`` version
 
 07-07-2018 v. 5.3.3
 +++++++++++++++++++
 
-   - Update docs with a FAQ and quick how-it-works.
-   - Fix a StopIteration error in the testing code.
-   - Enable Python 3.7 support in Travis-CI.
+   - Update docs with a FAQ and quick how-it-works
+   - Fix a StopIteration error in the testing code
+   - Enable Python 3.7 support in Travis-CI
 
 05-17-2018 v. 5.3.2
 +++++++++++++++++++
 
-    - Fix bug that prevented install on old versions of setuptools.
+    - Fix bug that prevented install on old versions of setuptools
     - Revert layout from src/natsort/ back to natsort/ to make user
-      testing simpler.
+      testing simpler
 
 05-14-2018 v. 5.3.1
 +++++++++++++++++++
 
-    - No bugfixes or features, just infrastructure and installation updates.
-    - Move to defining dependencies with Pipfile.
-    - Development layout is now src/natsort/ instead of natsort/.
-    - Add bumpversion infrastructure.
-    - Extras can be installed by "[]" notation.
+    - No bugfixes or features, just infrastructure and installation updates
+    - Move to defining dependencies with Pipfile
+    - Development layout is now src/natsort/ instead of natsort/
+    - Add bumpversion infrastructure
+    - Extras can be installed by "[]" notation
 
 04-20-2018 v. 5.3.0
 +++++++++++++++++++
 
-    - Fix bug in assessing ``fastnumbers`` version at import-time.
-    - Add ability to consider unicode-decimal numbers as numbers.
+    - Fix bug in assessing ``fastnumbers`` version at import-time (thanks @hholzgra)
+    - Add ability to consider unicode-decimal numbers as numbers
 
 02-14-2018 v. 5.2.0
 +++++++++++++++++++
 
-    - Add ``ns.NUMAFTER`` to cause numbers to be placed after non-numbers.
-    - Add ``natcmp`` function (Python 2 only).
+    - Add ``ns.NUMAFTER`` to cause numbers to be placed after non-numbers
+    - Add ``natcmp`` function (Python 2 only) (thanks @rinslow)
 
 11-11-2017 v. 5.1.1
 +++++++++++++++++++
 
-    - Added additional unicode number support for Python 3.7.
-    - Added information on how to install and test.
+    - Added additional unicode number support for Python 3.7
+    - Added information on how to install and test
 
 08-19-2017 v. 5.1.0
 +++++++++++++++++++
 
-    - Fixed ``StopIteration`` warning on Python 3.6+.
-    - All Unicode input is now normalized.
+    - Fixed ``StopIteration`` warning on Python 3.6+ (thanks @lykinsbd)
+    - All Unicode input is now normalized
 
 04-30-2017 v. 5.0.3
 +++++++++++++++++++
 
-    - Improved development infrastructure.
-    - Migrated documentation to ReadTheDocs.
+    - Improved development infrastructure
+    - Migrated documentation to ReadTheDocs
 
 01-02-2017 v. 5.0.2
 +++++++++++++++++++
 
-    - Added additional unicode number support for Python 3.6.
-    - Renamed several internal functions and variables to improve clarity.
-    - Improved documentation examples.
-    - Added a "how does it work?" section to the documentation.
+    - Added additional unicode number support for Python 3.6
+    - Renamed several internal functions and variables to improve clarity
+    - Improved documentation examples
+    - Added a "how does it work?" section to the documentation
 
 06-04-2016 v. 5.0.1
 +++++++++++++++++++
 
     - The ``ns`` enum attributes can now be imported from the top-level
-      namespace.
-    - Fixed a bug with the ``from natsort import *`` mechanism.
-    - Fixed bug with using ``natsort`` with ``python -OO``.
+      namespace
+    - Fixed a bug with the ``from natsort import *`` mechanism
+    - Fixed bug with using ``natsort`` with ``python -OO``
 
 05-08-2016 v. 5.0.0
 +++++++++++++++++++
@@ -94,39 +100,39 @@ Changelog
     - Refactored entire codebase to be more functional (as in use functions as
       units). Previously, the code was rather monolithic and difficult to follow. The
       goal is that with the code existing in smaller units, contributing will
-      be easier.
+      be easier
     - Deprecated ``ns.TYPESAFE`` option as it is now always on (due to a new
-      iterator-based algorithm, the typesafe function is now cheap).
+      iterator-based algorithm, the typesafe function is now cheap)
     - Increased speed of execution (came for free with the new functional approach
       because the new factory function paradigm eliminates most ``if`` branches
-      during execution).
+      during execution)
 
-      - For the most cases, the code is 30-40% faster than version 4.0.4.
+      - For the most cases, the code is 30-40% faster than version 4.0.4
       - If using ``ns.LOCALE`` or ``humansorted``, the code is 1100% faster than
-        version 4.0.4.
+        version 4.0.4
 
-    - Improved clarity of documentaion with regards to locale-aware sorting.
+    - Improved clarity of documentaion with regards to locale-aware sorting
     - Added a new ``chain_functions`` function for convenience in creating
-      a complex user-given ``key`` from several existing functions.
+      a complex user-given ``key`` from several existing functions
 
 11-01-2015 v. 4.0.4
 +++++++++++++++++++
 
-    - Improved coverage of unit tests.
-    - Unit tests use new and improved hypothesis library.
+    - Improved coverage of unit tests
+    - Unit tests use new and improved hypothesis library
     - Fixed compatibility issues with Python 3.5
 
 06-25-2015 v. 4.0.3
 +++++++++++++++++++
 
-    - Fixed bad install on last release (sorry guys!).
+    - Fixed bad install on last release (sorry guys!)
 
 06-24-2015 v. 4.0.2
 +++++++++++++++++++
 
     - Added back Python 2.6 and Python 3.2 compatibility. Unit testing is now
-      performed for these versions.
-    - Consolidated under-the-hood compatibility functionality.
+      performed for these versions (thanks @dpetzold)
+    - Consolidated under-the-hood compatibility functionality
 
 06-04-2015 v. 4.0.1
 +++++++++++++++++++
@@ -140,55 +146,55 @@ Changelog
     - Made default behavior of 'natsort' search for unsigned ints,
       rather than signed floats. This is a backwards-incompatible
       change but in 99% of use cases it should not require any
-      end-user changes.
+      end-user changes
     - Improved handling of locale-aware sorting on systems where the
-      underlying locale library is broken.
-    - Greatly improved all unit tests by adding the hypothesis library.
+      underlying locale library is broken
+    - Greatly improved all unit tests by adding the hypothesis library
 
 04-06-2015 v. 3.5.6
 +++++++++++++++++++
 
     - Added 'UNGROUPLETTERS' algorithm to get the case-grouping behavior of
-      an ordinal sort when using 'LOCALE'.
+      an ordinal sort when using 'LOCALE'
     - Added convenience functions 'decoder', 'as_ascii', and 'as_utf8' for
-      dealing with bytes types.
+      dealing with bytes types
 
 04-04-2015 v. 3.5.5
 +++++++++++++++++++
 
     - Added 'realsorted' and 'index_realsorted' functions for
-      forward-compatibility with >= 4.0.0.
-    - Made explanation of when to use "TYPESAFE" more clear in the docs.
+      forward-compatibility with >= 4.0.0
+    - Made explanation of when to use "TYPESAFE" more clear in the docs
 
 04-02-2015 v. 3.5.4
 +++++++++++++++++++
 
     - Fixed bug where a 'TypeError' was raised if a string containing a leading
-      number was sorted with alpha-only strings when 'LOCALE' is used.
+      number was sorted with alpha-only strings when 'LOCALE' is used
 
 03-26-2015 v. 3.5.3
 +++++++++++++++++++
 
     - Fixed bug where '--reverse-filter' option in shell script was not
-      getting checked for correctness.
+      getting checked for correctness
     - Documentation updates to better describe locale bug, and illustrate
-      upcoming default behavior change.
-    - Internal improvements, including making test suite more granular.
+      upcoming default behavior change
+    - Internal improvements, including making test suite more granular
 
 01-13-2015 v. 3.5.2
 +++++++++++++++++++
 
     - Enhancement that will convert a 'pathlib.Path' object to a 'str' if
-      'ns.PATH' is enabled.
+      'ns.PATH' is enabled
 
 09-25-2014 v. 3.5.1
 +++++++++++++++++++
 
     - Fixed bug that caused list/tuples to fail when using 'ns.LOWECASEFIRST'
-      or 'ns.IGNORECASE'.
+      or 'ns.IGNORECASE'
     - Refactored modules so that only the public API was in natsort.py and
-      ns_enum.py.
-    - Refactored all import statements to be absolute, not relative.
+      ns_enum.py
+    - Refactored all import statements to be absolute, not relative
 
 
 09-02-2014 v. 3.5.0
@@ -198,137 +204,137 @@ Changelog
       accepts an enum that is used to indicate the options the user wishes
       to use.  The 'number_type', 'signed', 'exp', 'as_path', and 'py3_safe'
       options are being deprecated and will become (undocumented)
-      keyword-only options in natsort version 4.0.0.
+      keyword-only options in natsort version 4.0.0
     - The user can now modify how 'natsort' handles the case of non-numeric
-      characters.
+      characters
     - The user can now instruct 'natsort' to use locale-aware sorting, which
-      allows 'natsort' to perform true "human sorting".
+      allows 'natsort' to perform true "human sorting"
 
       - The `humansorted` convenience function has been included to make this
-        easier.
+        easier
 
-    - Updated shell script with locale functionality.
+    - Updated shell script with locale functionality
 
 08-12-2014 v. 3.4.1
 +++++++++++++++++++
 
     - 'natsort' will now use the 'fastnumbers' module if it is installed. This
       gives up to an extra 30% boost in speed over the previous performance
-      enhancements.
+      enhancements
     - Made documentation point to more 'natsort' resources, and also added a
-      new example in the examples section.
+      new example in the examples section
 
 07-19-2014 v. 3.4.0
 +++++++++++++++++++
 
     - Fixed a bug that caused user's options to the 'natsort_key' to not be
-      passed on to recursive calls of 'natsort_key'.
+      passed on to recursive calls of 'natsort_key'
     - Added a 'natsort_keygen' function that will generate a wrapped version
       of 'natsort_key' that is easier to call.  'natsort_key' is now set to
-      deprecate at natsort version 4.0.0.
+      deprecate at natsort version 4.0.0
     - Added an 'as_path' option to 'natsorted' & co. that will try to treat
       input strings as filepaths. This will help yield correct results for
       OS-generated inputs like
-      ``['/p/q/o.x', '/p/q (1)/o.x', '/p/q (10)/o.x', '/p/q/o (1).x']``.
+      ``['/p/q/o.x', '/p/q (1)/o.x', '/p/q (10)/o.x', '/p/q/o (1).x']``
     - Massive performance enhancements for string input (1.8x-2.0x), at the expense
-      of reduction in speed for numeric input (~2.0x).
+      of reduction in speed for numeric input (~2.0x)
 
       - This is a good compromise because the most common input will be strings,
         not numbers, and sorting numbers still only takes 0.6x the time of sorting
-        strings.  If you are sorting only numbers, you would use 'sorted' anyway.
+        strings.  If you are sorting only numbers, you would use 'sorted' anyway
 
     - Added the 'order_by_index' function to help in using the output of
-      'index_natsorted' and 'index_versorted'.
+      'index_natsorted' and 'index_versorted'
     - Added the 'reverse' option to 'natsorted' & co. to make it's API more
-      similar to the builtin 'sorted'.
-    - Added more unit tests.
-    - Added auxillary test code that helps in profiling and stress-testing.
-    - Reworked the documentation, moving most of it to PyPI's hosting platform.
-    - Added support for coveralls.io.
-    - Entire codebase is now PyFlakes and PEP8 compliant.
+      similar to the builtin 'sorted'
+    - Added more unit tests
+    - Added auxillary test code that helps in profiling and stress-testing
+    - Reworked the documentation, moving most of it to PyPI's hosting platform
+    - Added support for coveralls.io
+    - Entire codebase is now PyFlakes and PEP8 compliant
 
 06-28-2014 v. 3.3.0
 +++++++++++++++++++
 
-    - Added a 'versorted' method for more convenient sorting of versions.
+    - Added a 'versorted' method for more convenient sorting of versions
     - Updated command-line tool --number_type option with 'version' and 'ver'
-      to make it more clear how to sort version numbers.
+      to make it more clear how to sort version numbers
     - Moved unit-testing mechanism from being docstring-based to actual unit tests
-      in actual functions.
+      in actual functions
 
-      - This has provided the ability determine the coverage of the unit tests (99%).
-      - This also makes the pydoc documentation a bit more clear.
+      - This has provided the ability determine the coverage of the unit tests (99%)
+      - This also makes the pydoc documentation a bit more clear
 
-    - Made docstrings for public functions mirror the README API.
-    - Connected natsort development to Travis-CI to help ensure quality releases.
+    - Made docstrings for public functions mirror the README API
+    - Connected natsort development to Travis-CI to help ensure quality releases
 
 06-20-2014 v. 3.2.1
 +++++++++++++++++++
 
     - Re-"Fixed" unorderable types issue on Python 3.x - this workaround
-      is for when the problem occurs in the middle of the string.
+      is for when the problem occurs in the middle of the string
 
 05-07-2014 v. 3.2.0
 +++++++++++++++++++
 
     - "Fixed" unorderable types issue on Python 3.x with a workaround that
       attempts to replicate the Python 2.x behavior by putting all the numbers
-      (or strings that begin with numbers) first.
+      (or strings that begin with numbers) first
     - Now explicitly excluding __pycache__ from releases by adding a prune statement
-      to MANIFEST.in.
+      to MANIFEST.in
 
 05-05-2014 v. 3.1.2
 +++++++++++++++++++
 
-    - Added setup.cfg to support universal wheels.
-    - Added Python 3.0 and Python 3.1 as requiring the argparse module.
+    - Added setup.cfg to support universal wheels
+    - Added Python 3.0 and Python 3.1 as requiring the argparse module
 
 03-01-2014 v. 3.1.1
 +++++++++++++++++++
 
-    - Added ability to sort lists of lists.
-    - Cleaned up import statements.
+    - Added ability to sort lists of lists
+    - Cleaned up import statements
 
 01-20-2014 v. 3.1.0
 +++++++++++++++++++
 
     - Added the ``signed`` and ``exp`` options to allow finer tuning of the sorting
     - Entire codebase now works for both Python 2 and Python 3 without needing to run
-      ``2to3``.
-    - Updated all doctests.
+      ``2to3``
+    - Updated all doctests
     - Further simplified the ``natsort`` base code by removing unneeded functions.
-    - Simplified documentation where possible.
+    - Simplified documentation where possible
     - Improved the shell script code
 
         - Made the documentation less "path"-centric to make it clear it is not just
-          for sorting file paths.
+          for sorting file paths
         - Removed the filesystem-based options because these can be achieved better
-          though a pipeline.
-        - Added doctests.
-        - Added new options that correspond to ``signed`` and ``exp``.
+          though a pipeline
+        - Added doctests
+        - Added new options that correspond to ``signed`` and ``exp``
         - The user can now specify multiple numbers to exclude or multiple ranges
-          to filter by.
+          to filter by
 
 10-01-2013 v. 3.0.2
 +++++++++++++++++++
 
-    - Made float, int, and digit searching algorithms all share the same base function.
-    - Fixed some outdated comments.
-    - Made the ``__version__`` variable available when importing the module.
+    - Made float, int, and digit searching algorithms all share the same base function
+    - Fixed some outdated comments
+    - Made the ``__version__`` variable available when importing the module
 
 8-15-2013 v. 3.0.1
 ++++++++++++++++++
 
-    - Added support for unicode strings.
-    - Removed extraneous ``string2int`` function.
-    - Fixed empty string removal function.
+    - Added support for unicode strings
+    - Removed extraneous ``string2int`` function
+    - Fixed empty string removal function
 
 7-13-2013 v. 3.0.0
 ++++++++++++++++++
 
     - Added a ``number_type`` argument to the sorting functions to specify how
-      liberal to be when deciding what a number is.
-    - Reworked the documentation.
+      liberal to be when deciding what a number is
+    - Reworked the documentation
 
 6-25-2013 v. 2.2.0
 ++++++++++++++++++
@@ -336,34 +342,34 @@ Changelog
     - Added ``key`` attribute to ``natsorted`` and ``index_natsorted`` so that
       it mimics the functionality of the built-in ``sorted``
     - Added tests to reflect the new functionality, as well as tests demonstrating
-      how to get similar functionality using ``natsort_key``.
+      how to get similar functionality using ``natsort_key``
 
 12-5-2012 v. 2.1.0
 ++++++++++++++++++
 
-    - Reorganized package.
+    - Reorganized package
     - Now using a platform independent shell script generator (entry_points
-      from distribute).
+      from distribute)
     - Can now execute natsort from command line with ``python -m natsort``
-      as well.
+      as well
 
 11-30-2012 v. 2.0.2
 +++++++++++++++++++
 
-    - Added the use_2to3 option to setup.py.
-    - Added distribute_setup.py to the distribution.
-    - Added dependency to the argparse module (for python2.6).
+    - Added the use_2to3 option to setup.py
+    - Added distribute_setup.py to the distribution
+    - Added dependency to the argparse module (for python2.6)
 
 11-21-2012 v. 2.0.1
 +++++++++++++++++++
 
-    - Reorganized directory structure.
-    - Added tests into the natsort.py file iteself.
+    - Reorganized directory structure
+    - Added tests into the natsort.py file iteself
 
 11-16-2012, v. 2.0.0
 ++++++++++++++++++++
 
     - Updated sorting algorithm to support floats (including exponentials) and
-      basic version number support.
-    - Added better README documentation.
-    - Added doctests.
+      basic version number support
+    - Added better README documentation
+    - Added doctests