Breaking Changes
* CLI syntax for `tealc set` has changed considerably
* usage: `tealc set --length LENGTH --string <GAUGE MATERIAL PITCH> [--string <GAUGE MATERIAL PITCH> ...] [--si] [--title]`
* _no_ `tealc set --file ...` (see `tealc file`)
* New, more intuitive setfile syntax (see README.md, `tealc file --help`, `tealc help`, or `help(tealc.SetFileParser)` from a Python console.
Changes
* Transfer CLI backed to Click (previously argparse)
* Include tests for CLI
* New CLI command: `tealc file SETFILE`: break out from `tealc set` and use new setfile syntax.
* New CLI command: `tealc materials`: print the material code/description chart
Bugfixes
* Fix a bug wherein `StringSet` with `si=True` would convert scale length from mm to inches _twice_, resulting in scale lengths of less than 1".
**Full Changelog**: https://github.com/davidelambert/tealc/compare/0.1.2...0.2.0