RF: Rework Olfactometer and PID classes
DOC: Improve documentation
Merge branch 'master' into hardware
RF: Disable Gustometer until it's actually ready to use
DOC: Switch to RTD theme & refactor doc rendering
DOC: Switch to RTD theme & refactor doc rendering
DOC: Change theme selection to support local & rtd building
RF: Add requirements.txt
BF: Add sphinxcontrib-napoleon to requirements
ENH: Adapt to use requirements.txt
Merge branch 'master' into hardware

Conflicts:
	.travis.yml
	setup.py
BF: Add pyfftw