Switch back to SNAPSHOT version.

This reverts commit 5ef7856f3a3ecc308d653f6e37b590249cde1cc4.
Switch back to SNAPSHOT version. That's the only way for scripted
tests to pick up the changes to sbt that is locally published.
Revert "Record dependencies on macro arguments"

This reverts commit 1b9751403c25b947ab3535d421f2675d5b937b65.

All tests that were built on top of 1b9751403c25b947ab3535d421f2675d5b937b65
are being marked as pending in this commit.
Merge pull request #1239 from gkossakowski/revert-1163

Revert #1163