open Cstruct at the beginning, minor refactorings
dh assembly tests
digitally signed tests
some handshake tests
fix assembling of extensions, and do proper padding
more tests regarding padding
actually test HelloRequest
implement assembling of HelloRequest
fix return types
some server hellos
test for signaturealgorithms
some real certificate as reader test case
add some readerwritertests
Merge pull request #73 from mirleft/refactor

Refactor writer