Rationalized the magenta annots, with as_pi etc.
Syntax with magenta color
Syntax with magenta color
Merge branch 'brazil-standalone' of https://github.com/andrejbauer/tt into brazil-standalone
Normalization for hint check/synth should use ->*
Fixed typos; added parentheses
Renaming desguar to debruijn.
Added shifting and substitution to Syntax
Context does shifting, can lookup hints
Added alpha-equivalence to Syntax
Added term normalization function to Typing
Added missing magenta annotations to Syntax
Added type normalization to Typing
Fixed typos; cleaned up type normalization rules
Added whnfs and whnfs_ty
whnf accumlates a context, but it never changes
Hint terms have magenta; fixed whnf to accumulate
Added equiv_ty function
Fixed typos; improved whnf term equivalence rules
Added most of term equivalence, except for J