Stop using CSVs for localizing your GameMaker game, and use a translation management system to easily collaborate and hot-load translation files into your game
Automated Bug Reporting with Sentry for GameMaker games
You can use Sentry to allow players to submit their bug reports to you automatically. This works great with structured logging to provide debugging info
Structured Logging in GML
show_debug_message() is great, but you can do better with instanced loggers, severity levels, structured logging, bound variables, and so on
MinHeap Priority Queues, an alternative for ds_priority
A modern GC-friendly version of ds_priority based on arrays and structs