add libsodium support
add libsodium tests
add salsa20 and chacha20
add ldconfig
bump
update CHANGES
add coverage
parallel libsodium and socksify builds
fix tests
master should wait for child to quit
add asyncdns test
lint code
remove domain not existed test(causing time out)
fix coverage
add coveralls
remove pypy as it is too slow
remove coveralls
add unit tests in encrypt
only test some ciphers
log method in encrypt unit test