about.md: Add supported eiffel editions

Solves: Jira GER-2365
Change-Id: I24587a2bf4d67875098aea910736a2e1be2795e5
1 file changed
tree: 0093d7b9f61c07eaaafc7db1c6c08c77c2aa5219
  1. src/
  2. BUILD
  3. external_plugin_deps.bzl