TypeCast Supported in PHP 7.1

[BRK] Methods now use the typecast supported in php 7.1
[BRK] Added tecnocen\roa\hal\Contract::getSelfLink()

[Enh] barebones fix of #35 hard coded self link

Merge pull request #37 from tecnocen-com/selflinkfix2

barebones fix of #35 hard coded self link

Change dependency yii2-oauth2-server

• [Enh] Can use Single Use token with 4.1.0 yii2-oauth2-server

Profile Resource and Contract

• [Bug] ProfileResource supports options action for the OPTIONS verb.
• [Enh] Simplified ProfileResource by extending yii\rest\Controller
  directly eliminating the need of several methods.
• [Bug] Resource and ProfileResource has unpredictable errors when
  searching for unexisten actions or matching verbs and actions.
• [Bug] Resource and ProfileResource now use
  yii\filters\VerbFilter to handle when a verb is not supported.
• [ENh] tecnocen\roa\hal\Contract and
  tecnocen\roa\hal\ContractTrait define and provide a simple
  implementation of a Hal contrat for ROA services.

Resmatered ActionFilters

OAuth2Resource was deleted in favor of a simpler implementation Resource

ApiVersion, ApiContainer and Resource all can handle ActionFilters now to make it easier to declare an specific behavior for a version, resource or the entire api. This will help for example CORS headers and OAuth2 configuration. Read [CHANGELOG.md] for more information.

[bugfix]

• EmbeddableTrait::fields() and EmbeddableTrait::extraFields() turned into abstracts to prevent the trait to override implementations by ActiveRecord and models

[Enh] Curies and Embedded

• Enh: New Support to curies (See https://tools.ietf.org/html/draft-kelly-json-hal-08)
• Enh: Implement support for nestable embedded relation on resources as in yii2.0.14
• Updated CHANGELOG.md

[bugfix] fix test for record resource response

0.2.3

fix json validated in sequence.

[Bugfix] self and responseJson

0.2.2

Fix seeResponseMatchesJsonType Array - and self seeResponseContainsJson

[Bugfix] Pass oauth2 module to filters

0.2.1

:book: typo