v2.13.0 / 2017 Feb 13

[com.taoensso/nippy "2.13.0"]

This is a minor, non-breaking maintenance release.

• [#91] New: Add freeze-to-file and thaw-from-file utils (@Engelberg)
• [#85] Impl: Lazily create LZ4 instance, fixes issue with Google App Engine
• Impl: Bump 1-byte cacheable types from 5->8