* Update copyright noticed 2020 * Update copyright in two overlooked files
* misc: bump license header to 2019 * misc: remove_duplicate_empty_lines.sh * misc: run license header script * commit cargo lock
- Refactor (and rename crate) and implement RwLock len cache. - improve docs - update ethcore verification queue to new version - Implement Default, From, also derive Debug - update: parking_lot to 0.7