Universal desirable behaviors for parsers
- Should work on the TAP as a stream (i.e. as each line is received)
rather than wait until all the TAP is received.
- The TAP source should be pluggable (i.e. don’t assume it’s always
coming from a Perl program).
- The TAP display should be pluggable.
- Should be able to gracefully handle future upgrades to TAP.
- Should be forward compatible.
- Ignore unknown directives
- Ignore any unparsable lines