* We now recommend checking in generated cabal files for repos. When
generating lock files for
extra-deps that only include `package.yaml` files, a deprecation
warning will be generated.
Also, those packages will no longer be included in the generated lock files.
* Add `build-output-timestamps` flag in yaml. Setting it to true
prefixes each build log output line with a timestamp.
* Upgrade `pantry`: module mapping insertions into the database are now atomic.
Previously, if you SIGTERMed at the wrong time while running a script, you
could end up with an inconsistent database state.