v0.7 beta
Changes:
- center raft
- add perimeter around the purge tower; helps keep the tower outlines clean and also bit more purge
- update HW config names: PEEK-PRO-12|PTFE-PRO-12|PTFE-EV6
- fix a bug with 'Perform retraction during wipe'-fix; not all wipes were processed
- change preferred tool change retraction from 0 to users normal retraction
- purge line feed rates are now calculated based on print profile's print speeds and outer perimeter feed rates
- fix a bug with E3DV6 hw-config where last purge line was retracting instead of extruding