Rule execution now runs, no tests tho

examples/dummy_project/main.orc

@@ -9,15 +9,15 @@ export ;> $a =200=> (greet $a)
 reeee := \$a.b
 
 -- single-word exported rule
-export main == (
+export main := (
     print "What is your name?" >>
     readln >>= \name.
     greet name
 )
 
-export < $a ...$rest /> == (createElement (tok_to_str $a) [(props_carriage ...$rest)])
-export (props_carriage $key = $value) == (tok_to_str $key) => $value
+export < $a ...$rest /> := (createElement (tok_to_str $a) [(props_carriage ...$rest)])
+export (props_carriage $key = $value) := (tok_to_str $key) => $value
 
 -- The broadest trait definition in existence
-Foo == (Bar Baz)
--- default anyFoo = @T. @impl:(T (Bar Baz)). impl:(T Foo)
+Foo := (Bar Baz)
+-- default anyFoo = @T. @impl:(T (Bar Baz)). impl:(T Foo)