added instructions since #477:
Supporting immediate operands required refactoring quite a lot of code and altogether was about 2 weeks of work.
Luke, does this sound good? Also, I'm not sure where best to fit this in our budget, so I'll leave that up to you (nlnet milestone and budget parent).
I mistakenly assigned this bug to a milestone without realizing that it had not yet been approved. This change reverts the milestone back to being unassigned.
remove budget that was not allocated from anywhere