beltSorter_0.4.0
[changes]
- there are now 3 tiers of beltSorter: basic, average and advanced
- basic belt sorter only allows setting 2 filter slots, average 3, advanced 4.
- advanced beltSorter allows setting custom priorities for input+output sides
- improved technology prerequisites, less requirements to get started
- hd images for all 3 tiers
[migration] - you will be warned for basic beltSorters which had more than 2 filter slots configured but have this removed now
[coding] - use native item selection dialog (much faster on multiplayer)
- refactored control logic of beltSorters, all beltSorters use now the same distribution logic