I'm the author of the original PE Bliss library, and I've been lately working on a newer version (PE Bliss 2), which already supports much more PE structures than the old one, and is also safer, unit-tested, more flexible, and modern. You can find it here: https://github.com/dragon-dreamer/pe_bliss2.
Also, take a look at the free static executable files analyzer built with PE Bliss 2: https://github.com/dragon-dreamer/binary-valentine