addrev warning

[Matt Caswell]

After upgrading Ubuntu over the weekend I'm suddenly seeing this warning
from addrev. Is anyone else getting this?

WARNING: git-filter-branch has a glut of gotchas generating mangled history
	 rewrites.  Hit Ctrl-C before proceeding to abort, then use an
	 alternative filtering tool such as 'git filter-repo'
	 (https://github.com/newren/git-filter-repo/) instead.  See the
	 filter-branch manual page for more details; to squelch this warning,
	 set FILTER_BRANCH_SQUELCH_WARNING=1.
Proceeding with filter-branch...


MMatt