DONE:
    -open an image
    -apply a filter to an image
    -save an image
    -close the software
    -save the project
    -open a new project
    -start a new project
    -mandatory filters
    -some bonus filters
    -multi images handling
    -historic
    -load filters at runtime
    -a parametrized filter
    -add description to the more button possible

TODO:
    -multi projects handling
    -more filter and more way to set parameter to those
    -add a mini tutorial at launch of the program
    -possibility to add plugin at runtime