Bump to 0.4.44 (#399)

Release 0.4.43 (#386)

The main feature in this release is a new API to write PAX
extensions.

Bump to 0.4.42

Release 0.4.41 (#361)

There's only one notable change here, which is that
`Header::Deterministic` on Windows now uses the same timestamp
as is used on Unix.  If this breaks your use case, please
let us know in #346

Besides that, there's a few testing, documentation, and internal
cleanups.  We're hoping to continue to merge PRs and address
issues; this release is small but is intending to maintain
momentum.

Signed-off-by: Colin Walters <[email protected]>

Bump to 0.4.40

Bump to 0.4.39

Bump to 0.4.38

Bump to 0.4.37

Bump to 0.4.36

Bump to 0.4.35