af965a074b
* Cleanup EInkDisplay * Add EINK_DISPLAY_SINGLE_BUFFER_MODE build flag and allow for single buffer rendering * Add SSD1677 E-Ink Display Driver Guide Copied verbatium from https://github.com/CidVonHighwind/microreader/blob/main/doc/SSD1677_GUIDE.md * Add a few details in the readme and update the SSD1677_GUIDE