CMake support & version tag

[higaski]

Would you accept a PR which adds a CMake configuration to your project? I have little knowledge in CMake's "packaging" side of things (export, local install, stuff like that) , but I could provide basic support for building CWPack and it's optional expansions from source. The tests could also be integrated to CTest I guess.

And absolutely unrelated... Is it intentional that the version 1.4 tag is missing it's "v" character at the beginning?