Add an outline to the backing up chapter
Add some content to backup chapter
Make exclude-caches scenario clearer, robust

Originally, we would create L/wanted, then do a manifest, then create
L/cache, then backup, restore, verify. This would sometimes fail, if
the full-second timestamp of L would change when L/cache was created.
So we (well, I) changed it so that we fiddled with the manifest just
before making a backup, but this was weird and confusing and would
still sometimes fail. This should now be much clearer and therefore
more robust.
Depend on texlive for pdflatex
Remove building of manual in setup.py

The manual requires build dependencies that may or may not be
available, and it doesn't (at least yet) need to be built everywhere,
since it's very much a work in progress.
Build manual in Debian package
Add build-dep on lmodern

It is needed for manual building.
Add a couple of notes of things to add to manual
Clarify Python version dependency in README
Add sections on exclusions, config files
Remove ikiwiki related CSS
Formatting tweak: chapter/section numbering
Fix manual/Makefile clean target
Add version number to metadata

Automatically from git describe.
Fix how 000.mdwn is used
Add sections on de-duplication to manual
Add section on dealing with locks during backups
Add section on backup live data consistency
Outline sections for the restore chapter
Write restore chapter