mod=example.com/basic
version=v0.1.2
base=v0.1.1
proxyVersions=example.com/basic@v0.1.1
-- want --
example.com/basic/a
-------------------
Incompatible changes:
- A2: removed

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

Suggested version: v0.2.0