Things.py

What's Changed
* update things to 0.0.15, fixes latest things database update
* update argcomplete to 2.0.0, fixes 13 by bkleinen in https://github.com/thingsapi/things-cli/pull/14

New Contributors
* bkleinen made their first contribution in https://github.com/thingsapi/things-cli/pull/14

**Full Changelog**: https://github.com/thingsapi/things-cli/compare/v0.1.4...v0.2.0

* Fixes 10: missing escapechar for csv export

* 5: added command for tasks created today ( thanks to dominik42)

Fixing 'gantt' argument

added support for logtoday

* Using new things.py library to show "yellow" tassk
* move version to 0.1.0