have parse.c work across multiple sexprs in a buffer
bugfixes in eval to properly handle some error conditions
minor bugfix in node.c to properly print node values
new testcases for simple io library
Add profiling options to Makefile
start minor refactoring in memory.c to wrap calls to dlist_insertlast
add more tracing to paren, no default print values
minor bugfix to testcase base.000 due to changed library name