Merge pull request #186 from tocwex/tlat/409k-compat

Update sys.kelvin for 409

Merge pull request #184 from tocwex/sl/v1.6.X/more-redo-fixes

v1.6.1: yet more chain watcher fixes

Merge pull request #183 from tocwex/sl/v1.6.X/chain-watcher-breakout

v1.6.0: chain watcher fixes + refactoring

Merge pull request #182 from tocwex/sl/v1.5.X/various-chain-fixes

v1.5.5: various chain sync bugfixes

v1.5.4 rc1: fix app tile link

Merge pull request #180 from tocwex/sl/v1.5.X/scry-failure-fixes-2

v1.5.3: hotfix for %pals scry crash on upgrade (take 2)

Merge pull request #179 from tocwex/sl/v1.5.X/scry-failure-fixes

v1.5.2: hotfix for `%pals` scry crash on upgrade

Merge pull request #178 from tocwex/sl/v1.5.X/410k-support

v1.5.1: 410k support

Merge pull request #177 from tocwex/sl/v1.4.X/oracle-profile-pages

v1.5.0: ux improvements + bugfixes

Merge pull request #172 from tocwex/sl/v1.4.X/interface-polish-r6

v1.4.5: ever more ui improvements (bugfixes)