0.27.0

• Breaking Changes (see also 0.27.0-rc1 changelog):
  • Support for React 0.14.0 only.
  • url-pattern 0.10 brought breaking updates. If you are customizing url-pattern, there is a new API:
    • createURLPatternCompiler() and setCreateURLPatternCompilerFactory() have been removed.
    • Instead, pass an object at the prop urlPatternOptions on either your router or individual routes.
      Route-level options will be merged with precedence over Router options. Contextual router options
      are not merged between levels.
  • matchKeys has been deprecated. url-pattern now handles this natively; pass an array as the prop
    urlPatternOptions when using a regex.