use temporary directory instead of hard-coded name
rename temp directory
output export location
print output directory
allow updating version position that is not assigned yet
new switch -I to copy built package back
compact vignettes
don't add extra zeros after version number
Merge branch 'master' into clever-bump
Merge branch 'master' into compact-vignettes
support updating NEWS-style files when bumping version
Merge branch 'master' into clever-bump
Merge branch 'master' into compact-vignettes
Merge branch 'master' into tmp

Conflicts:
	crant
Merge pull request #19 from krlmlr/tmp

use temporary directory instead of hard-coded name
Merge pull request #21 from krlmlr/clever-bump

Various enhancements for bumping version (-u switch)
Merge pull request #22 from krlmlr/compact-vignettes

compact vignettes