Merge remote-tracking branch 'origin/mnovich/session-management' into…

… mnovich/session-management

* origin/mnovich/session-management:
  SessionPills file rename + hook
  show recent ones always
  safe filenames
  style closer to design
  better sorting
  working end to end
  filter number of sessions and age
  now kind of works
  shifting to invoke
  Session management WIP