Added changelog for the 1.9.1 release

CHANGELOG.md

@@ -1,5 +1,15 @@
 # CHANGELOG
 
+## 2019-12-03, v1.9.1
+
+- Add link to PHPStan extension to readme [\#1834](https://github.com/fzaninotto/Faker/pull/1834) ([finwe](https://github.com/finwe))
+- Enhancement: Collect code coverage [\#1824](https://github.com/fzaninotto/Faker/pull/1824) ([localheinz](https://github.com/localheinz))
+- Enhancement: Use all columns when running tests [\#1823](https://github.com/fzaninotto/Faker/pull/1823) ([localheinz](https://github.com/localheinz))
+- Enhancement: Configure verbose output via phpunit.xml.dist [\#1822](https://github.com/fzaninotto/Faker/pull/1822) ([localheinz](https://github.com/localheinz))
+- Curly braces for arrays is deprecated in PHP 7.4 [\#1843](https://github.com/fzaninotto/Faker/pull/1843) ([wimg](https://github.com/wimg))
+- Fix: Reduce visibility of setUp\(\) and tearDown\(\) [\#1821](https://github.com/fzaninotto/Faker/pull/1821) ([localheinz](https://github.com/localheinz))
+- Fix: Mark test classes as final [\#1820](https://github.com/fzaninotto/Faker/pull/1820) ([localheinz](https://github.com/localheinz))
+- Fix: Remove unnecessary class-level DocBlocks [\#1819](https://github.com/fzaninotto/Faker/pull/1819) ([localheinz](https://github.com/localheinz))
 
 ## 2019-11-10, v1.9.0