commit 9b32a927730a1725b8398e5c4e14a6e08354af13
Author: Hugo van der Merwe <17109322+hugovdm@users.noreply.github.com>
Date:   Wed Mar 24 18:52:51 2021 +0100

    ICU-21508 Rename 'master' to 'main' in dev/tool/tzu/SourceModel.java (#20)
