some progress with Bytestring.hs
added new todo test for pointer arithmetic. requires proper embed, NOT inside haskell but inside fixpoint, as late as possible, AFTER type checking maybe...?
adding another quirky ptr test tests/pos/ptr2.hs
some progress with bytestring
done with maximum and minimum
any, all, max, min etc. all done. onto scan.
ugh. need to revisit createAndTrim to deal with scanl and friends, to show that output size equals input size + 1
really nice use of abs-pred/hoffery