mod=example.com/basic
version=v1.1.2
base=v1.1.1-pre
proxyVersions=example.com/basic@v1.1.1-pre
-- want --
example.com/basic/a
-------------------
Incompatible changes:
- A2: removed

example.com/basic/b
-------------------
Incompatible changes:
- package removed

Suggested version: v1.1.1