Version 0.8.0 is different from 0.8

I have `test-framework-0.8` installed, but when I depend on it in a cabal file as `build-depends: test-framework >= 0.8.0`, it claims that the dependency is missing.

Is it desired that `0.8.0` is treated as strictly `> 0.8`?

Start by reproducing the dependency declaration in a Cabal file with test-framework-0.8 installed and build-depends: test-framework >= 0.8. Trace how Cabal compares package versions, then determine the expected handling of 0.8 versus 0.8.0 and add the corresponding regression coverage or documentation.

Written by the indexing model from the issue text.