Format Gnome Planner

[Progi1984]

Gnome Planner is a popular open source planning tool which writes its own XML files.

Source : http://www.mpxj.org/howto-read-planner.html

Sample File :

• https://github.com/joniles/mpxj/blob/master/junit/data/password-protected-mpp9.mpp
• https://github.com/joniles/mpxj/blob/master/junit/data/planner-calendar.planner
• https://github.com/joniles/mpxj/blob/master/junit/data/planner-resource.planner
• https://github.com/joniles/mpxj/blob/master/junit/data/planner-sample.planner
• https://github.com/joniles/mpxj/blob/master/junit/data/project1.planner

Source : https://github.com/joniles/mpxj/blob/master/src/main/java/net/sf/mpxj/planner/PlannerReader.java#L113

[Progi1984]

File : https://gitlab.gnome.org/World/planner/-/blob/master/examples/kitchen.planner?ref_type=heads