Candidate for version 0.2.0

Thanks to may users feedback and developers, it's ready to prepare 0.2.0.
Those are our porposed features for 0.2.0:

1. Stable
- Fixed several major bugs so it should be stable

2. Included nice test tool.

3. Faster
- Added directory list cache

The candidate is in the CVS davfs2 module.
Please check it out and test it to make really cool davfs2.

I appreciate it.