Edge cases might still exist around plugins which use WE for initial
world-gen, or in general plugins that try to access the platform
before it's ready.
The new command now writes a json file to WorldEdit's working directory with instructions on which chunks to delete, which is read by the plugin/mod at startup and calls the ChunkDeleter.
The chunk deleter parses the json and iterates the instructions, backing up .mca files as it goes and overwriting the offset headers with 0 wherever a chunk needs to be deleted.
This allows Minecraft to reclaim the space used for that chunk, as well as forcing it to be generated from scratch next time the area is loaded.
Added some basic permissions to some basic and fawe specific commands.
Since they weren't around previously, they are true by default, however, you can now revoke/negate them.
All patterns now have suggestions, including recursive patterns.
Suggestions will suggest blocks and block states.
All masks now have suggestions, though mask intersections are not
yet supported due to issues with quotes strings.
EntityRemover and ItemFactory now also have completions, as well
as all RegistryConverters (though I am unsure how many are actually
used).
Also use paper's AsyncTabComplete event, if available.
Legacy mapper now uses the data fixers to upgrade blocks and item types
(e.g. signs, dyes that changed names in 1.14).
The sponge schematic reader can now attempt to use the data fixers to
upgrade blocks, block entities, biomes and entities. This has been
tested with the 1.13 -> 1.14 changes. It is yet to be seen if it will
continue to work because...
The mc edit schematic reader has code for using data fixers, but it is
currently disabled as there seem to be some issues with fixing up older
block entities.
* Not all EntityTypes in Bukkit have the correct enum name.
* Don't read entire schematic files to list. Go off file extension only.
(Reading in files is more accurate, but slow.)
* Enforce extensions. (Due to the above, while you can technically make a
schematic called 'test.txt', it's better that we save it as
'test.txt.schem'.)
* Fix a few minor warnings.
