Add cut_before_last & substr_before_last tests & docs
Add cut_after & substr_after tests & docs
BugFix: cut_after functions modified the input to an empty string
Add cut_after_last & substr_after_last tests & docs
Add random tests & docs
English wording correction
Change strip_accent implementation to match more accents
Add strip_accent tests & docs
Add strip_special_char tests & docs
BugFix: Collapse if there are several replacement characters
Add must_be_array tests & docs
Add merge_unique & reverse_merge_unique tests & docs
Add must_valid_schema tests & docs
Link correction on headers
Add must_be_class tests & docs
Improve must_be_class function to add a \ before the object class name
Improve must_be_class function to also uniformize class
Add get_attribute_names tests & docs
Add get_class_name & get_namespace tests & docs