new changes from aaron
stretch/unstretch data before/after the conversion process
Pure-python implementation of Blowfish
Using pyblowfish, removed pycrypto dependency
Removed invalid options of bit length
Removed dependency to pycrypto
Added passphrase-protected mnemonic, for plausible deniability.
Generate vectors just for 128, 192 and 256 bit codes
Added AES class
Added unit tests for Rijndael
Blowfish replaced by Rijndael (AES)
Test vectors for Rijndael stretching
Removed Blowfish implementation
update documentation
Added test_similarity(), current wordlist *don't* pass this test yet.
Fixed indentation
Remove words using graphically similar characters
Added more similar characters
New test vectors
rework BIP moreorless from scratch