User overridable setup, loop and main through __attribute__((weak))
#1141
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…eak))` Following the same pattern as in the case of `serialEvent`, I've done the following: * provide an empty implementation of the `setup` and `loop` functions; * mark all three functions (`setup`, `loop` and `main`) as `__attribute__ ((weak))` so that the user is able to override them with customized versions; See issue #1138
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Following the same pattern as in the case of
serialEvent, I've done the following:setupandloopfunctions;setup,loopandmain) as__attribute__ ((weak))so that the user is able to override them with customized versions;
See issue #1138
(This is another variant of the pull request #1139)