update CHANGELOG (and minor docblock changes)

CHANGELOG.md

@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [2.0.0] - 2017/05/11
+
 * Changed: renamed `getBy<Identifier>` methods to `<identifier>` ([#29]).
 * Changed: renamed `getAll` to `all` ([#29]).
 * Changed: renamed `listBy` to `iterator` ([#29]).
@@ -25,8 +27,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 * New: initial release of `league/iso3166`.
 
-
-[Unreleased]: https://github.com/thephpleague/iso3166/compare/1.0.1...HEAD
+[Unreleased]: https://github.com/thephpleague/iso3166/compare/2.0.0...HEAD
+[2.0.0]: https://github.com/thephpleague/iso3166/compare/1.0.1...2.0.0
 [1.0.1]: https://github.com/thephpleague/iso3166/compare/1.0.0...1.0.1
 [1.0.0]: https://github.com/thephpleague/iso3166/compare/64bae4f00dbd5679b9a36c54c37af73d5deb5be1...1.0.0
 

src/ISO3166.php

@@ -14,20 +14,25 @@
 
 final class ISO3166 implements \Countable, \IteratorAggregate, ISO3166DataProvider
 {
-    /** @var string */
+    /**
+     * @var string
+     */
     const KEY_ALPHA2 = 'alpha2';
-
-    /** @var string */
+    /**
+     * @var string
+     */
     const KEY_ALPHA3 = 'alpha3';
-
-    /** @var string */
+    /**
+     * @var string
+     */
     const KEY_NUMERIC = 'numeric';
-
-    /** @var array */
+    /**
+     * @var string[]
+     */
     private $keys = [self::KEY_ALPHA2, self::KEY_ALPHA3, self::KEY_NUMERIC];
 
     /**
-     * @param array $countries replace default dataset with given array
+     * @param array[] $countries replace default dataset with given array
      */
     public function __construct(array $countries = [])
     {
@@ -67,7 +72,7 @@ public function numeric($numeric)
     }
 
     /**
-     * @return array
+     * @return array[]
      */
     public function all()
     {
@@ -150,7 +155,7 @@ private function lookup($key, $value)
     /**
      * Default dataset.
      *
-     * @var array
+     * @var array[]
      */
     protected $countries = [
         [