Fixed a substring error in libcrispr
In libcrispr#extendPreRepeat() the repeat array would become
corrupted if the read was a palindrome as the prerepeat would be
extended indefinitely.  A new variable was added to prevent repeats
from extending on top of each other
remove -Werror
Warnings should be kept as warnings in the production code since
some users will use a newer version of the compiler than I can
test with.  But I should remember to keep -Werror on for development