Use "Material for Sphinx" theme for documentation

[amotl]

This switches to Material for Sphinx, which provides a more modern documentation look & feel. Also, it renders tremendously better on mobile devices.

[codecov]

Codecov Report

Merging #154 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #154   +/-   ##
=======================================
  Coverage   91.85%   91.85%           
=======================================
  Files          28       28           
  Lines        1436     1436           
  Branches      103      103           
=======================================
  Hits         1319     1319           
  Misses         88       88           
  Partials       29       29           

Flag	Coverage Δ
#unittests	91.85% <ø> (ø)

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[amotl]

Might RTD has got stuck after merging this?

[gutzbenj]

This is the output

Collecting sphinx_rtd_theme==0.5.0
  Downloading sphinx_rtd_theme-0.5.0-py2.py3-none-any.whl (10.8 MB)
ERROR: Could not find a version that satisfies the requirement sphinx-material=="0.0.30" (from -r docs/requirements.txt (line 2)) (from versions: 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.7, 0.0.8, 0.0.9, 0.0.10, 0.0.11, 0.0.12, 0.0.13, 0.0.14, 0.0.15, 0.0.16, 0.0.17, 0.0.18, 0.0.19, 0.0.20, 0.0.21, 0.0.22, 0.0.23, 0.0.24, 0.0.25, 0.0.26, 0.0.27, 0.0.28, 0.0.29, 0.0.30)
ERROR: No matching distribution found for sphinx-material=="0.0.30" (from -r docs/requirements.txt (line 2))

[gutzbenj]

It should be sphinx-material==0.0.30

[amotl]

Thanks. I've just fixed it.