Lush type symbols are assigned their own value.
Added a form for evaluating the test expected value.
Added a preliminary implementation of index, including its lisp1 application
Fixed typos in array indexing.
Added more array tests
Added VECTOR, ARANGE, ARANGE*, SCALAR
Implemented various array properties
Simplified the access to arrays (no inlined specializations) and implemented the reader using Lush arrays instead of Lisp ones.
Generic function = for comparisons.
Turned #'= into a generic function.
Changed the interface for building and accessing array elements, and made the reader for [] forms use it.