v0.7.0

What's Changed

• Viewer survives WebGL being unavailable by @Shpigford in #38
• Skill teaches the viewer one affordance at a time by @Shpigford in #42
• Run the test suite in parallel and the strict check beside it by @Shpigford in #43
• Version the skill file and nudge when an installed copy is stale by @Shpigford in #44
• Release 0.7.0: an installed skill knows when it is stale by @Shpigford in #45

Full Changelog: v0.6.1...v0.7.0