alexrj/Slic3r — pull request #2018 by llluis (2014-05-06 23:32:21+00:00)
Title: "Unretract Speed" and "Pressure Multiplier" features

As discussed in issue #1677, I've implemented 2 new features: "unretract speed" and "pressure advance".
This could be merged into master, as it presents great advantage for bowden systems and allows great speed changes.