main changes are:
- Modified marker (* character before name) goes up the project tree by
marking all parents of a modified object as modified.
- Impact management when changing an object's ID. Allows for some
refactoring to occur, while marking the impacted elements as modified,
or aven creating "altered" versions if imapcted element was only in game
source.
- Projects can now use either loadresources.xml or
loadresources_debug.xml, or none (as before). This must be selected at
project creation and cannot be changed.
- NPC and Items comparators now include both the source and altered
version of elements present in both.
- Spritesheets view should now be better laid out, as insets were not
taken into account, thus cropping a few pixels right and down.
