WMcD

Users can then create a header file, such as bdf_10x20_local.h, that has content: ``` #ifndef BDF_10X20_LOCAL_H #define BDF_10X20_LOCAL_H const char* BDF_10X20_STRING = R"BDF_NON_KEYWORD( ---copy-paste the entire bdf font file here,...

@hzeller, merged in the recently approved 1-line change (to respect bbx offset) that WardBrian had resolved.