v0.2.1 release

v0.2.0 release

Fix Jose import issue (square#93)

Also, added jest testing framework and first unit test to improve
coverage.

Merge pull request square#90 from square/alok/v0.1.7

v0.1.7

0.1.6

0.1.5

0.1.4

Fix utf-8 handling

0.1.1