added conditional statement tests
prelim assignments as operators (no chaining or multi-letter words)
added variable chaining to operators (still no multiletter words)
made functions with braces possible
made multiple letter words work
made variable and function chaining work
function assignment now ignores errors (as before)
revved ohmic
functions and variables revert if an error occured during an expression
only the correct conditional is now eval()'d
change default depth
added more comparison operators
changes to operators
change binary casting to (long long)
more assignment tests
added negative brackets functionality
slightly better expression searching (function chaining still not working)
function chaining is pointless -- remove old feature
set traceback position of errors to ? for if and : for else
added more tests for conditional statements