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Updated testing strategy to integrate automated test coverage
metrics. Immediate test and code improvements as a result. Initial
coverage was 53%. Releasing now at 57%.

Clearly backed out Python 3.5 support for the moment. The AST
``Call`` signature has changed notably. Will need to deep-dive to
fix that.

Fixed problem with underlying ``say`` object interactions. Some
doc and testing tweaks.

Updated config, docs, and testing matrix.

Improved pretty printing of code snippets for ``show.inout`` and
``show.retval`` decorators.

Made ``show`` also accept lambdas to link to variable values.

Added ``noshow`` object for easy turning off of showing.

General cleanups. Tightened imports. Tweaked docs. Switched to
``FmtException`` from ``say>=1.0.4``, and separated extensions
into own module.

Drove version information into ``version.py``

Moved main documentation to Sphinx format in ./docs, and hosted
the long-form documentation on readthedocs.org. README.rst now an
abridged version/teaser for the module.

Improved robustness for interactive use. If names cannot be
detected, still gives value result with ``?`` pseudo-name.

Improved type names for ``show.dir`` and ``show.props``

Improved ``show.inout`` with full call string on function return.
A bit verbose in small tests, but too easy to lose "what was this
called with??" context in real-scale usage unless there is clear
indication of how the function was called.

Improved omission of probably useless display properties via
``omit`` keyword.

Began to add support for showing properties even when proxied
through another object. Currently limited to selected SQLAlchemy
and Flask proxies. More to come.

Cleaned up source for better (though still quite imperfect), PEP8
conformance

Bumped version number to 1.0 as part of move to `semantic
versioning <http://semver.org>`_, or at least enough of it so as
to not screw up Python installation procedures (which don't seem
to understand 0.401 is a lesser version that 0.5, because 401 >
5).

Probably several other things I've now forgotten.