Turn STDERR logging back on

Alfred 2 has been fixed.

Turn off STDERR logging to prevent hangs

Workaround for #80.

Allow auto-update to prerelease versions

• Add prerelease option for updates #77
• Make writing of settings.json uninterruptible #79

Thanks to @idpaterson for the above new features

Force POST requests

• #74 fixes long-standing issue that POST requests weren't POST requests without any data.

The unit tests have been heavily overhauled to use py.test and run entirely offline. This
makes the tests run on Travis CI again.

Fix PyPi distribution error

v1.15.3

Handle mutable values properly in Settings

• Fix broken handling of mutable values by Settings
• Ensure settings.json is only written when Settings has changed

Add notifications

• Post notifications via Notification Center (10.8+ only)
• Change documentation theme to Alabaster
• Tidy up scripts

Add file locking around `settings.json`

Add file locking around settings.json to prevent overwriting by different processes (#69)

Improve data integrity

• Prevent workflow from being killed while writing to disk #66
• Context manager and decorator to make your own code more resilient
• GET parameters from params and the URL are now combined in web.py
• Add project icon
• Add rudimentary Dash docset

No new features/bugfixes

Fix a rendering problem of the description on PyPI.

Otherwise no changes. Release is only to maintain parity with PyPI version numbers.