rm: rm deprecated function for indexmap 

fix: lint fix 

feat: update docs 

feat: add more CI tooling 

Bump version to 3.0.0 

🆕 Ready for 2.1.0 release 

📦 Ready for 2.0.1 and fix bugs 

🧹 Run cargo fmt and fix in Travis 

Bump versions 

bump to 0.13.2