update README with a hint that signing works
Update buffer.h

We don't need no edu^H^H^Hredundant dependencies.
Merge pull request #3 from numerical/patch-1

Update buffer.h
search for signatures and add them to the database

Issue #4
add -k/--key opt for specifying the key
remove the -r/--repo flag and move it to first arg
support all the compression schemes repo-add does
add hacky repo-add compat
add a config struct to deduplicate code
update README
prefer long op in README
replace strsep with strstr in find_repo
remove tracing messages
only resign the db when it's changed
some refactoring
more refactoring
segfault, resizing may move the buffer
only calculate sums if needed
code organization
bug: removing the wrong version on conflict