* getpixelcolor: attribute pure - it reads memory, but does not write
* some optimizations for SEGMENT.blur() and SEGMENT.fadeToBlackBy()
* FX.c:pp remove double calls to blur() and fade_out()
* FX.cpp: SEGMENT.setUpLeds() added to effects, to enable LED buffering (safe some time because getPixelColor does not need to access NeopixelBus)
* a few other optimizations to safe time and avoid "expensive" operations
* set I2C bus speed to 400kHz (default is 100Khz)
* a few other small optimizations and tweaks
* pio: esp32 V4 builds use "patch5" toolchain version, which contains a few bugfixes especially for memory management.
* Improved pin manager, ethernet config
* Ethernet is configured prior even to LED pins
* Pin Manager allocation / deallocation functions
now take an "ownership" tag parameter, helping
avoid accidentally free'ing pins that were allocated
by other code
* Pin Manager now has ability to allocate multiple
pins at once; Simplifies error handling
* Fix operator precedence error
Bitwise AND has lower precedence than the
relational "greater than" operator.
* PinManager update for some user modules
* don't build everything...
* Final step to reduce RAM overhead
* update comment
* remove macros
* Remove leftover allocated
* Init ethernet after settings saved
Co-authored-by: Christian Schwinne <dev.aircoookie@gmail.com>
