Fix random mixin members not getting remapped due to concurrency issues #115
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When remapping a jar with many mixins (sponge jar) I discovered that some members were not remapped properly. Which members were not remapped was fully random and changed each time I re execute the task.
After some debugging I found that multiple threads are writing to the
tasks
list inMixinExtension
but this list is not thread-safe. I tried replacing it with a thread-safe collection and it fixed my problem. Here is the fix.