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 <walters@verbum.org>

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tar"
-version = "0.4.40"
+version = "0.4.41"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 homepage = "https://github.com/alexcrichton/tar-rs"
 repository = "https://github.com/alexcrichton/tar-rs"