Build #20:   Merge pull request #4 from bunop/devel :green_heart: fixing travis build on branch master about 6 years ago

Build #4:   removing python 3.4 till I find the issue on branch master over 6 years ago

Build #3:   Fixing pyplot backend whe no $DISPLAY is found on branch master over 6 years ago

Build #10:   :memo: updated README on branch master almost 7 years ago