Things that should be resolved:
- library should be available over maven/jcenter repositories
- library should be ready for including as a submodule into bigger projects:
- no hardcoded version of minsdk or targetsdk, or build tools. all those things should be defined over the variables, that is quite easy to override on root project;
- expected lower compatibility API (at least API 14)
If I find a free time I will create a fork and a pull request with those changes...