+ Try installation on Ubuntu.
+ Code moved to bitbucket.
-- Investigate package over module installation.
x Tricky swapping of collector like figleaf, pycov, et al. (Don't need to do
- Seems like there should be a faster way to manage all the line number sets in
- If tracing, canonical_filename_cache overlaps with should_trace_cache. Skip
canonical_filename_cache. Maybe it isn't even worth it...