Aioca

-----------------

- Update CI and build to latest standard 15
- Add purge_channel_caches() function 16

-----------------

- Improve packaging

-----------------

- Improve performance of ca*_array functions
- Specify minimum requirements for epicscorelibs

----------------

- Port of cothread.catools to asyncio

.. _Unreleased: ../../compare/1.6...HEAD
.. _1.6: ../../compare/1.5.1...1.6
.. _1.5.1: ../../compare/1.5...1.5.1
.. _1.5: ../../compare/1.4...1.5
.. _1.4: ../../compare/1.3...1.4
.. _1.3: ../../compare/1.2...1.3
.. _1.2: ../../compare/1.1...1.2
.. _1.1: ../../compare/1.0...1.1
.. _1.0: ../../compare/0.2...1.0
.. _0.2: ../../compare/0.1...0.2