v0.1.5: Merge pull request #6 from klauer/mnt_clean

• Grammar clean-up
• Enum fixes
• Removal of original IEC grammar; so we're lark-only from here on out
• Addition of pre-commit, versioneer, etc.

Pragmas, pragmas, pragmas

Merge pull request #3 from klauer/pragmas

Fix pragmas in VAR_GLOBAL

The PyPI Name-Claiming Release

Successfully parses the declaration/implementation sections of 885 of 890 TcPOUs on my local computer. A pretty good start!