Type not found

[Darkscanner]

I installed using haxelib install spritesheet, and I included <haxelib name="spritesheet" /> in my project.xml. However attempting to import anything from spritesheet returns type not found. Even the provided demo returns
Type not found : spritesheet.behaviors.Behavior.

I don't understand what's wrong. Why would this be happening?

[mrender]

I had the same issue and realised that the 1,2,0 version on haxelib is not the same on github (DEV?).
So I am using the github version.