A log analyzer for the command line

Build loglens, a small tool in the spirit of the ones every operations team writes. Parse access-log lines with FromStr, read the file named on the command line, aggregate statistics per endpoint, filter with flags, and report through exit codes that scripts and CI can act on.

Milestones

1. Parse a line with FromStr
2. Read the file named on the command line
3. Statistics per endpoint
4. Filters from the command line
5. Polish: exit codes that scripts can act on