add sphinx configuration to rtd.yaml

Signed-off-by: foamyguy <foamyguy@gmail.com>

remove deprecated get_html_theme_path() call

Signed-off-by: foamyguy <foamyguy@gmail.com>

Merge pull request #54 from vladak/spelling_1

fix spelling/style

Merge pull request #53 from michaeldye/ver35-compat-check

Fixes #52

Merge pull request #49 from adafruit/docs_req_fixes

unpin sphinx and add sphinx-rtd-theme to docs reqs

Merge pull request #48 from jerryneedell/jerryn_power

Fix setting of the Power amplifiers when power boost is enabled

Merge pull request #46 from adafruit/fix_rtd_theme

fix rtd theme

Update .pylintrc, fix jQuery for docs

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Merge pull request #44 from jerryneedell/jerryn_size

implemented a few code size reductions