[box_wood_frame] add return_type
[macro] integrate the help-script in each macro
[macro] integration of sys.path into macro under operation
[macro] remove the old script
[box_wood_frame] macro finalized
[cnc25d_api] update macro with the new sys.path
[gearwheel] macro fit the new standard
[gearwheel] fix dictionary initialization
[gear_profile] set default resolution to 2
[outline_backends] fix issue with colinear points
[tests] add juergen and dxf_arc tests
[juergen_test] add optional_additional_inter_axis_length