v2.2.3

v2.2.3

• Changed release version number to indicate that it is the newest version.
  • To avoid confussions
  • gpapp had a different version number for the previous version, but it was the same.
    I adopted his numbering to indicate this is the newest one.
• Changes to adapt this addon to changes in Freeplane
  • in Freeplane version v1.11.8_5
  • changes in method: org.freeplane.features.map.MapWriter.writeMapAsXml()