
* linpacker 0.5.3 : new architecture and partial rewrite
  - canvas view                                             done
  - log view                                                done
  - data view : actions when rectangles are modified        done
  - saving / loading                                        done
  - export (png, svg, csv)                                  done
  - algorithms : launch the solver                          done
  - plugin interface                                        done
  - recent files action                                     done
  - iron out the known bugs                                 done

* log view
* new documentation
* svg export
* csv export
* command-line for loading files
* interface for proprietary plugins
* time limit for computation
* configuration dialogs

* linpacker 0.5.2 bugs :
  ratio set improperly                                      fixed
  artefacts on the canvas                                   fixed
  launching the solver                                      fixed
  crash when mutation==0 in strip algorithm                 fixed
  make progressdialog more meaningful                       fixed
  make packing valid when adding new rectangles             fixed

