**Update Lingua Franca to v0.4.1**
The update from Lingua Franca v0.2.x to v0.4.x includes few
breaking changes.
- Some API methods have been updated.
- Mycroft-core tests have been updated to reflect improvements in
Lingua Franca's formatting and parsing.
- add LF default lang setting method to config.locale
including warning that this method will change in the future
- Add TODO's for 21.08 - moving more methods to LF
- simplify loading and setting default of languages in Skills service
- Remove unneeded wrappers for Lingua Franca functions
- Fix documentation of format and parse utils
- Fix test warnings
Kris Gesling