Change the first byte of CircuitPython 'mpy' files to "C" #4713
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.. and also distinguish CircuitPython better in
mpy-cross --version
In #4693, we allocated some flag bits differently than MicroPython (in order to fully distinguish async functions from generators). This makes our
.mpy
files incompatible with ones generated from any version of MP.Change our first mpy signature byte to 'C' to distinguish us from MicroPython which uses 'M'.
Hopefully this will be the last bytecode incompatibility before 7.0. 馃槣