reflect dataenc->sandi change in travis file

and while I'm at it, fix seduction... kinda ♥

pimp up random droplet movement vector init to create half-elliptic rather than square patterns - makes using piano less painful to the eyes

adding some frontend stuff to changelog

- Use sandi instead of dataenc (bugs.debian.org/836686) - Only try to import module from the package being tested (sometimes packages have modules with equal names, so a test for module presence could succeed when you have one package installed instead of another)

Use regex match for bans

fix issue #110

fix build