Support exports version 8 in the load_export command

Closes #1762 (closed)

Tested by importing this v8 export from this Horae dump from PictorIA workshop.

changed milestone to %Arkindex 1.6.1

added Quick Win label

requested review from @erouchet

assigned to @vrigal

changed title from Support export v8 to Support exports version 8 in the load_export command

resolved all threads

added 5 commits

• f66d9966...da737565 - 2 commits from branch master
• 32318ed4 - Support version 8 exports in load_export
• 6634d088 - Update tests
• 29401f53 - Suggestion

Compare with previous version

merged