matrix in repeaters performance

Слиты nikitronn запросил слияние github/fork/vicdoval/matrix_in_repeaters_performance в master

Created by: vicdoval

Changing from a match_long_repeat approach to a make_repeaters (itertools) approach gives up to a 50% of performance boost in some cases In this case image goes from 3 secs to 2 secs

Preflight checklist

Put an x letter in each brackets when you're done this item:

  • Code changes complete.
  • Code documentation complete.
  • Documentation for users complete (or not required, if user never sees these changes).
  • Manual testing done.
  • Unit-tests implemented.
  • Ready for merge.