v0.3 changelog and adjusted README. (#168)

* v0.3 changelog and adjusted README.

* Skip towncrier in RTD build when no fragments.

Retry

Now with no fragments.

* Fix current version statement.

* Automate version statement.

* Shift towncrier choice into Makefile.

* Revert conf.py

v0.3 changelog and adjusted README.

Changenotes ready for v0.2. (#119)

Initial Sphinx documentation content. (#76)

* Initial Sphinx documentation content.

* Improved Sphinx config.

* Update README.

* Create placeholders for extended User Guide content.

* Reference docs pages.

* Fix User Guide page.

* Fix some links.

* Tie off broken link.

Xr unitsfix (#65)

* WIP tests etc

* Check xrload == xrncload with xr.identical().

* Drop control chars from exclude.

* Tidy, remove unused options.

Rename some tests to be more descriptive. (#51)

Changes to support installable package.

Update README.md

Add 'requests' as a dep for testing with iris.tests. (#23)