Proto commits in ZakisM/bl3_save_edit

These 3 commits are when the Protocol Buffers files have changed:

2021-07-01

Commit:	66c493d
Author:	Zak	2021-07-01 14:38:14 +0100

Switch to lib and add unit tests

The documentation is generated from this commit.

Commit:	8b0ab85
Author:	Zak	2021-06-27 13:42:55 +0100

Update latest proto bufs

Commit:	42c84a2
Author:	Zak	2021-06-19 21:02:49 +0100

Initial commit.