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The goal of the QMK software project is to develop a completely customizable, powerful, and enjoyable firmware experience for any project - keyboard or otherwise - and to provide helpful, encouraging, and kind support and feedback for people with any software development experience.

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Update MSYS' AVR-GCC to use the 5.4.0 toolchain

We’ve updated the MSYS install script to grab the newer toolchain version AVR-GCC for Windows (version 5.4.0).

This should reduce the file size of compiled binaries by a decent sized chunk, and may fix odd issues.