foyer 0.6.0

Features

• SMARTS strings are now parsed with lark instead of plyplus, which is no longer being developed. lark is more modern and appears to be more performant. (#224)
• The whitelists and blacklists used in resolving atom types now use built-in sets.
• Python 3.6 is now supported (#204)

Maintenance

• A number of dependencies have been dropped (MDTraj: 4c0020a, plyplus: #224, oset: #231)
• networkx is now pinned to v2.0+ to avoid using previous versions that are no longer compatible.
• A contributor's guide has been added (#214)
• Some issue and PR templates for GitHub have been added (#215)
• Codecov is now used as part of the CI routine (#227)
• Conda builds are once again done with noarch (#218)
• Python 2.7 is not tested on Appveyor, though it is still being tested in Travis CI and is still officially supported.

Bugfixes

• An incorrect mass in oplsaa.xml has been fixed (#236)