added final console output

added console output imidiately after finta starts

added max iter

fixed animate_tracing command

fixed hessian background in drawing function

fixed scaling of persistence data with the user supplied unit, not tested yet, but i will test it with kevins data once he approaches me

fixed minor user interface bugs and updated documentation.

seriously improved fit function for persistence length

seriously improved fit function for persistence length

line dorrelations can now be output so users can do their own persistence length fit, not yet documented

fixed small bug in userinterface

added tested and documented invert command

added loop diameter as output. already documented and tested

updated documentation

added feature, allowing to pick one color channel for tracing