Version 0.8.0 released

These fixes have been collecting for a while. Now you all get to enjoy
them too.

The version number has been changed to reflect that the currect code is
stable, yet is still missing some features which would be necessary for a
1.0 release.

New in this release:

 * Remember commit message and autofill it on next attempt if commit fails
 * fixed: catch requests for non-existent diffs
 * fixed: error handling cleanup in networking code
 * fixed: Windows-specific networking fixes
 * fixed: binary file corruption on Windows with 'construct'
 * fixed: glob expansion with 'describe -d'
 * fixed: renaming corner case involving directories, renaming and deleting
 * fixed: files renamed out of a deleted directory on another branch were 
marked as a name conflict
 * fixed: use case-insensitive regexps for post-commit hooks because the config 
parser lowercases everything
 * fixed: filesystem timestamp precision problems
 * fixed: Python 2.5 fixes

Ross