Rewrote to work with webapi-parser

Major changes (BREAKING):

• Rewrote to work with webapi-parser (#31);
• New dev dependency: webapi-parser;
• Dropped dependency: xtend;
• Now depends on mulesoft-labs/router#router-engine instead of blakeembrey/router#router-engine. Former repo contains latter repo changes merged on top of latest updates of pillarsjs;
• Second argument to Router.<METHOD> functions is now an array of webapi-parser.Parameter instead of uriParameters schema;
• Dropped RAMLVersion option (now inferred automatically);

Minor changes:

• Updated dependencies' versions;
• Switched to const/let instead of var;

v0.7.0

• Updated dependencies
• Dropped Node 8 support

Updated dependencies

v0.6.0

0.6.0

RAML 1.0 support

v0.5.0

version 0.5.0 with support for RAML 1.0

Instance `ramlUriParameters`

Changed

• Use ramlUriParameters per instance

RAML Path Match 2.0

Changed

• Use raml-path-match 2.0 with support for URI Template Level 2
• Change RAML parameter inheritance to be based per-router

Path Match Update

Changed

• Update immutable path matching update method to get new route matchers

Persist raw URI parameters match

Fixed

• Wiping out URI parameters patch match when a request with ramlUriParameters was populated

URI Parameter Reuse

Added

• When a subsequent router is used with the same URI parameter name, merge previously used schemes (useful for Osprey + RAML usage)

Middleware Arrays

Added

• Support for an array of functions in Router#verb, Router#all and Router#use