Bump version to 2.2.0 for release

Update version number.

Bump version number.

Set version number

Bump version number

Don't filewalk prebuild directory (#205)

Bump version for release.

version bump 0.10.0 (#156)

Co-authored-by: MatthewHambley <MatthewHambley@users.noreply.github.com>

version bump to 0.9.0a1, plus developers' notes on versioning (#122)