Decompose 0.8.0 is released! Big update! - Deprec...

# decompose

[Arkadii Ivanov]

Decompose 0.8.0 is released! Big update!

- Deprecated Router and introduced Child Stack
- Deprecated ValueObserver typealias

Release notes and migration tips - https://github.com/arkivanov/Decompose/releases/tag/0.8.0