v0.6.2

Changelog

• ee5419d Jira: a test pins every type's glyph and colour, the sub-task flag on its own, and issueType names the concept in code and fakes alike
• 9367857 Jira: an issue's lead glyph is its type in Jira's colours, not its priority, which most sites leave at one default
• 156e070 README: cut to what a reader needs