Update self version in Cargo.lock

Prepare for v0.14.0-pre.1 release (#83)

Updated changelog, readme, and Cargo.toml for v0.13 (#75)

Prepare for v0.12 release (#65)

Merge pull request #47 from rozbb/release/0.11

Upgraded subtle to 2.5, and bumped crate version to 0.11.

Small README changes

Bumped version number

Exported rand_core