1. RGB configuration was configured incorrectly, and caused re-definition warnings.
2. MISO pin is not always set, so shouldn't trigger a compilation error (see e.g. `Setup25_TTGO_T_DISPLAY.h`).
A new background rendering approach is used for smooth fonts which almost eliminates flicker. tft.print... can now be used with a background rendered for smooth fonts. Font_Demo_1/2/3... examples have been updated.
A new "docs" folder has been created and files moved there. The Tools folder now only contains support tools.
#1757 fixed by using Arduino calls.
A new USER_SETUP_ID parameter can be added to setup files and checked via a new verifySetupID(id); function.
Version raised to v2.4.50
