Feel free to browse the distribution directory for tar.gz files for "released" versions -- or take a look at the source trees themselves for different versions.

Version v1 uses an algorithm based on the description of base64 conversion the wikipedia base64. It works on fixed length buffers only.

Version v2 is pretty much the same as v1, but it has the example code from the documentation page included. It is also the current version that is a work in progress, so it may change.