v1.10.0: Four new languages and move to gosimple/unidecode fork

New release after long time (sorry, I was burnout).

Main points in this release:

• Thanks to the contributors four new languages substitution was added (French, Norwegian Nynorsk, Dutch (Flemish) and Slovenian). Thank you!
• Forked https://github.com/rainycape/unidecode to https://github.com/gosimple/unidecode with added fix for handling Unicode U+10000. More Unicode characters handling will be added in the future.

🚀 New features and improvements

• Adding french language (#48) by @fraiss-c
• Add Norwegian language subs (#50) by @marcusirgens
• Added Slovenian substitutions and tests (#52) by @stefanb
• Remove forcing of go version 1.13 in modules (#42) by @matrixik

🐛 Bug Fixes

• Change to gosimple/unidecode fork (#56) by @matrixik (this will fix panic reported in #53)

🧰 Maintenance

• Update README and always run tests on master (#58) by @matrixik
• Fix langs alphabetic order in the code (#57) by @matrixik
• Fix running tests in github workflow (#55) by @matrixik
• Add github workflow files and remove travis (#54) by @matrixik