- style change.
- removed unprovable theorems.
- style change.
- style change.
- style change.
- style change.
- more style change.
- reverted back definition for inner-efxmap2perm and efxmap2perm. My
  last change is too complicated and break a lot of things.
- I still believe we could prove something like apply-efx-preserves-permission-leq.
- changed definition for set2facts too.
- style change.
- adapted changes from consistency.elf
- removed extra whitespace.
- fixed a change caused by consistency.elf.
- added more world assumptions.
- clsmap-cxt-efxmap-implies-[effects2input, effects2output]
- removed leq-lookup-eq.
- style change.
- [predmap|clsmap]-lookup-implies-ty2perm
- style change.
- removed whitespaces.
- changed cxt-set to cxt-class-set
- removed fldmap-inner-efxmap
- changed cxt-efxmap to clsmap-cxt-efxmap
- added clsmap-cxt-reftype and clsmap-cxt-tgtmap
- changes caused by change on methty.
- fixed effects2output/unique/0t.
- defined methty2proctype and consty2proctype.
- defined methmap2progtype.
- removed redundant whitespace.
- get-field-permission lemmas
- proved reftyping-ok/before-read/unique/0f.
- halfway through reftyping-ok/before/read/unique/0t.
- removed whitespace.
- removed whitespaces.
- changes made by methty.