[TYPO3-core] RFC #11808 : [Feature]: Increase performance using mbstring in t3lib_cs->crop

[Tolleiv.Nietsch]

+1 by reading -

Timo didn't point out how big the performance-boost was but especially 
if you use this heavily (like the TemplaVoila page-module) the 
improvements are tremendous.

Since I know you had some real Unit-Tests on that maybe you could also 
attach them.

Thanks,
Tolleiv