Bump version 0.10.0 -> 0.11.0

We just bumped the MSRV, this is a major change but since we are pre 1.0
we just have to bump the minor version number.

Bump version from current `0.10.0` to `0.11.0`.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bitcoin_hashes"
-version = "0.10.0"
+version = "0.11.0"
 authors = ["Andrew Poelstra <[email protected]>"]
 license = "CC0-1.0"
 description = "Hash functions used by rust-bitcoin which support rustc 1.29.0"