changelog, idle tracking
Safety Net and Safety Blanket

Issue #543
Another new Boost

And a wording change to Safety Net
The rest of the new boost and issue #577
Discovery and monument counts in stats`

Reddit request
Reduce Mario Spam

Partial solution - some still remains #532
Merge pull request #575 from waveney/wav20

Safety Net and Safety Blanket
Merge remote-tracking branch 'origin/ed-isnotawebdesigner'