Document which backends implement which itnerfaces. Fixes #538
Merge pull request #560 from alex/document-backends

Document which backends implement which itnerfaces. Fixes #538
More clearly describe the behavior of constant_time.bytes_eq
Some reST markup nonsense
Merge pull request #563 from alex/better-constant-time-docs

More clearly describe the behavior of constant_time.bytes_eq
Merge branch 'master' into osx-docs
Removed pointless anchor