version 0.2.0

Changes since 0.1.8:
- Rename the "context" keyword argument to "derive_key_context" for
  clarity.
- Upgrade PyO3 to 0.14, which raises the minimum supported Python
  version to 3.6.
- The blake3.OUT_LEN and blake3.KEY_LEN module constants have been
  replaced with "digest_size" and "key_size" attributes on the hasher
  object itself. This is more consistent with how the standard hashlib
  module behaves. A "block_size" attribute has also been added.
- Add the blake3.__version__ module constant.
- Add the "neon" Cargo feature, which maps to the "neon" feature of the
  underlying blake3 crate.

Cargo.toml

@@ -5,7 +5,7 @@
 # PyPI. Installing this with `pip install blake3` is better than something
 # redundant like `pip install PyBLAKE3-py`.
 name = "blake3"
-version = "0.1.8"
+version = "0.2.0"
 authors = ["Jack O'Connor <[email protected]>"]
 description = "Python bindings for the Rust blake3 crate"
 repository = "https://github.com/oconnor663/blake3-py"