Some repository cleaning.

Hello,
There is some last cleaning.
The builds could be replaced by this tags (I think I can't PR tags):
0.1.6 c0e48ccbfa7a9c23d518a6f326ff73c32bcdf7d3
0.1.5 569b5d233af33f4d6fbaa1843e981a01f708bbb0
0.1.4 713f733eb441c3fde9c5213737ccec7583bf4b02