v0.7.0

Introducing jless, a command-line JSON viewer.

This release represents the significant milestone: a complete set of basic functionality, without any major bugs.

This GitHub issue details much of the functionality implemented to get to this point. Spiritually, completion of many of the tasks listed there represent versions 0.1 - 0.6.

The intention is to not release a 1.0 version until Windows support is added.