Latest tags are from 2016 & 2017:
https://github.com/bither/bitherj/tags
Latest commit in master branch is from 2016:
1dff0be
while in develop branch last commit is from Jul 2, 2021
b8346e6
Thus, please push changes to master branch as well, and git tag releases, also consider using Github releases & add description of the releases to them: https://github.com/bither/bitherj/releases