Add note from Sergei W. on subtyping

2018-09-10 21:01:46 -07:00 · 2018-09-10 21:01:46 -07:00 · b8487aa0d4
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 # TODO Items

+- a subtype is a situation where the compiler is entitled to add a type conversion in the type-checking process
+b/c that type conversion doesn't correspond to a computation 
+    -Sergei W.

 *A neat idea for pattern matching optimization would be if you could match on one of several things in a list
 ex: