update to v0.4.3 (fcakyon#54)

update to v0.4.2 (fcakyon#49)

update version to v0.4.1 (fcakyon#46)

drop conda support, update python version (fcakyon#38)

* drop conda support

* update torch and python versions

* update line length

* update min python version

* update version to v0.4.0

update to v0.3.5 (fcakyon#34)

update readme (fcakyon#29)

* update readme

update to v0.3.3 (fcakyon#26)

update to v0.3.2 (fcakyon#23)

fix empty_cuda_cache (fcakyon#13)

minor reorganization (fcakyon#12)

* rename image utils module

* sort imports