Added support for loading certificates and private key pairs from PKCS #12 files, as well as loading certificates (without private key) from PEM or DER files. Some code restructuring and cleanup.
updated README
Bug in doubleToStr #557
Adding Timestamp::raw

Returns the raw value, (the internal representation) of the timestamp.
Useful when storing to a database for instance.
Merge pull request #558 from ivannp/develop

Adding Timestamp::raw
added Clock::raw(); style fixes
NetSSL_Win: various bugfixes and improvements
Poco::Buffer properly handles zero-sized buffers
Merge remote-tracking branch 'upstream/develop' into develop