Pushed 3.3.4.11 and then 3.3.4.12

The first has a fix for the incorrect argument handling in `launch-program`, and the second has two fixes for feature handling from Eric Timmons.

At 4.12 it seems to me that we have a bunch of bug fixes that should be released into the wild, and there seems little cost to doing so, since there aren't breaking changes.

So.... Please test out the current version if you can -- just download or clone it and use it in your day-to-day work, and report any issues.

I plan to release ASDF 3.3.5 next weekend, assuming no one finds any real stinkers in the meantime, or if anyone has a high priority fix that needs to go in ASAP.

Best, R