Bump version to 1.22.0

Adds ClosableRandomAccessStream as a generic interface for FileStream

v1.20.0: Fix possibly hanging process after SIGINT/SIGTERM

- `core.file`: Fix `-preview=in` support - [pull vibe-d#290][issue290]
- Mark `TaskFiberQueue.insert` functions `@trusted` (By Dennis Korpel) - [pull vibe-d#291][issue291]
- Fix possibly hanging process after SIGINT/SIGTERM - [pull vibe-d#292][issue292]

[issue290]: vibe-d#290
[issue291]: vibe-d#291
[issue292]: vibe-d#292

Bump version to 1.19.0

Bump version to 1.18.1

Deprecates non-nothrow task callbacks

Bump version to 1.17.1

Bump version to 1.17.0

Bump version to 1.16.0

Bump version to 1.15.0