Version 5.1.0

This minor release brings the following changes:

• patterns are stored in DOM-Storage in the raw format (instead of as trie); this is faster since building the trie is highly optimised and much faster than unpacking and parsing the huge indexed trie.
• fixes a performance issue when checking if String.normalize() is supported
• fires hyphenation of elements immediately instead on timeout (better perf)
• deferred writing to storage works with frames, too
• fixes an issue with toggling hyphenation