Document where to get OpenSSL on windows
Link the official page
Add HKDF vectors from RFC5869.
SHA256 vectors.
DOcument the primitives used in Fernet
Merge pull request #501 from alex/document-primitives

Document primitives
Merge pull request #500 from dreid/hkdf-vectors

Add HKDF vectors from RFC5869.
add library switch for windows support

Temporarily using pragma: no cover on it until we have windows coverage
on travis. Windows builds will be done via jenkins for now.
remove advapi32 until we need it (for cryptgenrandom)
add windows support to changelog
Merge pull request #322 from reaperhulk/windows-support

add platform check to set library names for linking on windows
Merge pull request #499 from alex/windows-openssl

Document where to get OpenSSL on windows
Python implementation of OpenSSL locking callback
Also test the locking cb directly
Some docs
Split a test in half
add doc info about how to link against homebrew OpenSSL on OS X
add env so homebrew instructions work in fish as well as bash on OS X
add instructions on how to install openssl via homebrew
Merge pull request #450 from reaperhulk/fix-444

How to link against homebrew OpenSSL on OS X