v0.3.0

Apollo 2 firmware v0.3.0 — one flashable image per
supported Waveshare board (bootloader + partitions + app combined;
flash at offset 0).

Easiest install: the web flasher —
plug the board in and flash from Chrome, no tools needed.

Command-line alternative:

esptool.py write_flash 0 apollo2-<board>-v0.3.0.bin