v0.8.6

Changelog

1dd4edc analytics-nudge: styling to make nudge more obvious (#1664)
bdf40f4 analytics: enable new web analytics opt workflow (#1662)
211e728 analytics: runtime opt-in/out; record anon stats (#1645)
8c3f68d engine / alerts pane: fix crash rebuild loop, show crash rebuilds in alerts pane [ch2607] (#1661)
7c1e91a upper tests: fix race condition (#1663)
5c4e163 version check: move api limit errors to verbose, don't render upgrade badge on error (#1660)
aa9c270 web: change keyboard shortcut to \ so it is easier to press
efab92c web: clean up the UI a bit on narrow widths (#1659)
db1d2a6 web: more specific info when showing nudge - whether user opted in/out, http response body if error; finalize copy [ch2553] (#1654)
1f72191 web: style analytics nudge [ch2554] (#1655)