v0.10.1

Changelog

02aa084 Update CHANGELOG.md for v0.10.1
f08ba68 Update to latest gocommon
04962e8 Merge pull request #292 from nyaruka/errors
2478e14 Rename types.Repr to types.Describe
3c6343a Improve error messages on complex objects and add tests
020f1c6 Move min function to utils and add tests
1a5d953 Rename Repr() to Describe()
47e4269 Add XValue.Repr() so that values can describe themselves in error messages
931bb1b Improve parser error messages and add tests for error messages