v4.0
Replaced the underlying zxcvbn-library with the forked mkopinsky/zxcvbn-php which has a better, more exact and more reliable implementation of the original zxcvbn by Dropbox.
Possible breaking changes
Note: If you access and use the zxcvbn-library directly, this version will break your code. However, if you only use l5-zxcvbn for validation purposes, it should be fully backwards compatible with v3.*.