* Various FIXME tags are removed
* In curve.js:
- webCrypto/nodeCrypto fallback bug is fixed
- Curve25519 has keyType ecdsa (won't be used for signing, but technically can be)
- webGenKeyPair is simplifed
* In base64.js:
- documentation added and arguments simplified
* In ecdsa.js and eddsa.js:
- hash_algo is now at least as strong as the default curve hash
- simplified the code by moving webSign/nodeSign and webVerify/nodeVerify to live in key.js (ht @ismaelbej)
* In message.js:
- in decryptSessionKey, loops break once a key packet is decrypted
* In key.js:
- getPreferredHashAlgorithm returns the best hash algorithm
- enums are used for curve selection
