Version increment to v0.2.3-dev for recent changes.

Bug fixes.

Version increment to v0.2.2-dev for recent changes.

This was a quick debugging session to smash out some bugs.

Version increment to v0.2.1-dev for recent changes.

Version increment to v0.2.0 for recent changes.

This merges changes from v0.1.2-dev through v0.1.9-dev into master.

This clobbers the changelog for the period above and updates
UPGRADING.md but otherwise no other changes were made outside of
version indication.

Version increment to v0.1.9-dev for recent changes.

Version increment to v0.1.8-dev for recent changes.

Hot fix to address missing closing double quote.

Version increment to v0.1.7-dev for recent changes.

Version increment to v0.1.6-dev for recent changes.

My GitHub desktop application synced changes early and before this
commit was made. This could have causes a discrepancy for users who
cloned or downloaded the repo archive from 9/3/2016 to 9/5/2016. My
apologies, it is my intention to always push any changes with a new
version number attached to it for debug reasons.

Version increment to v0.1.5-dev for recent changes.

Version increment to v0.1.5-dev for recent changes.