New in 0.1.5
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* Changed '#' to Set for the type of types
  - old syntax works, but is deprecated and will be removed soon.
* 'syntax' definitions
* %spec works in pattern clauses as well as CAFs
* Added 'Proof' type for marking computationally irrelevant terms.
* Added List permutation proofs to the library (perm.idr)
* Various new functions in the library.
* Lots of bug fixes

New in 0.1.4
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* Namespaces