3.4

This release focuses on performance and bugfixes. The hash functions are improved by, at last, reimplementing a hash algorithm ourselves.

• Add CCOpt.get_exn_or and deprecate CCOpt.get_exn

• CCRAL: add get_and_remove_exn operation

• CCString: add CCString.uniq

• refactor CCHash to use FNV in many combinators

• CCInt: improve perf by using a single implementation of popcount using int64

• fix: CCRAL.remove does not always remove

• fix(sexp): re-export the loc type to the functor's argument's type

• refactor and clarify cutoff in String.edit_distance

• fix(CCInt): make sure hash is always positive

• big upgrade to CI thanks to @FardaleM