* Add --require-explicit-ids to require explicit ids
We just got bit by a well intentioned developer forgetting that field
order by default is the field index. 3 people missed it in review.
I'm looking at ways to make it harder to mess up. We are requesting
that developers explicitly id all fields in tables. Automatic (opt in
for others) enforcement of this will help the effort succeed. This
patch adds a command line flag which lets the user require ids on all
fields in tables.
* Added docs to Compiler.md as well