Remove the logging library and only keep the lines format.

A similar logging library is available at https://github.com/zimbatm/lines
Benchmark updates
Major refactor. Copy the JSON gem a lot.
Faster parsing with strscan
Spec fixes
Better parsing of unfinished lines
Follow JSON more closely
misc fixups
>< Gross hack because Kelan doesn't know how to code
More cleanups
Makes the format a bit less ambiguous
Share more of the constants
Even more sharing
cleanup
Removes unnecessary date encoding
TODO: escaped chars parsing
...
cli example idea
Test parsing with \n at the end of the line
Merge branch 'no-logging'

Logging is now implemented by the u-log gem