Updating the version to 0.8.0, docs, readme,...

[t-w]

As written above.

Documentation is corrected only briefly, updates are for most crucial changes (no time to review all details...).

I guess, this can go as 0.8.0 (see also #40).

[lclevy]

You can remove my club internet email . Ideas for future updates:

• Modern api Doc generation from code
• use uint32 instead of long?
• python wrapper?