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

# summary
Suggested version: v1.1.1