1.3.0

added:
- Show version in app (git describe)
- Dark mode (#177)
improved:
- Show »All joined« button only if at least one participant is not set to joined (#122)
- Shorter startup time by adding timeout to initial replication, falling back to possibly stale data and syncing later
fixed:
- Updating amount in new participant inputs
- Updating UI after remote data change
- Missing transaction data - happened when loading app with no prefilled local browser data withURL pointing to transaction
- Preselecting joined for two participants (regression)
changed:
- Optimize JS dist code, decreasing browser support (most notably remove IE11 support)