Allow customization of key generation in cookie session store
Trim the AES key to size (256 bits)

This is the same behaviour as ruby OpenSSL
Merge pull request #123 from cconstantin/trim-aes-key

Trim the AES key to size (256 bits)
Merge pull request #117 from cconstantin/cookie-session-store-key-opts

Allow customization of key generation in cookie session store
Use PKCS7 padding, the same as OpenSSL
Merge pull request #124 from cconstantin/pkcs7-padding

Use PKCS7 padding, the same as OpenSSL
Add support for custom session cookie serializers
Merge pull request #114 from cconstantin/cookie-serializers

Add support for custom session cookie serializers
Fixes decoding for decryption errors
Merge pull request #125 from cconstantin/decode-fix

Fixes decoding for decryption errors