0.2.0

• Add into helper that has similar semantics with clojure into. Given a spec and
  appropriate data it creates the buffer of exact size for the spec and writes the
  data to it.
• Add platform independent way se the buffer capacity.
• Fix cljs compatibility issues in string specs.
• Add support to write and read from a collection of byte buffers.
• Add repeat composition type spec.
• Add dynamic vector* type spec.
• Add unsigned version of primitives typespecs: uint16, uint32 uint64, ubyte.
• Convert to conditional readers (clojure 1.7 is now the minimum clojure
  version required).
• Add proper externs for enable advanced compilation.