Update dependency redux-observable to v2 #150

All 164 tests pass in 2m 21s

1 files ±0 24 suites ±0 2m 21s ⏱️ +14s
164 tests +2 164 ✅ +2 0 💤 ±0 0 ❌ ±0
165 runs +2 165 ✅ +2 0 💤 ±0 0 ❌ ±0

Results for commit e691da9. ± Comparison against earlier commit c0e9847.