Add changelog for v1.0.3

CHANGELOG.md

@@ -1,22 +1,47 @@
+1.0.3 / 2020-03-28
+==================
+
+Features:
+
+* Bumped ```symfony/panther``` to ```~0.7```
+* Bumped ```behat/mink``` to ```~1.8```
+* Added support for ```keyUp```, ```keyDown``` and ```sendKeys```
+* Added support for html5 input type ```type```
+
+Testsuite:
+
+* Added PHP 7.4 in the CI
+* Removed allowed failures for PHP 7.4
+
+Fixes:
+
+* Added constants required by PantherTestCase (Thx to @Haehnchen & @symfonyaml)
+* Fixed ```switchToIFrame``` when a string is provided
+
+Misc:
+
+* Added hint about issue ```This version of ChromeDriver only supports Chrome version``` to [README](README.md)
+
+
 1.0.2 / 2020-03-28
 ==================
 
-Restrict [```symfony/panther```](https://github.com/symfony/panther) version to ```~0.4,<0.7```.
-So if you want to use old panther version then use this version.
-This library will drop support for ```symfony/panther``` with versions ```<0.7```. 
+Restricted [```symfony/panther```](https://github.com/symfony/panther) version to ```~0.4,<0.7```
+So if you want to use old panther version then use this version
+This library will drop support for ```symfony/panther``` with versions ```<0.7```
 
 Misc:
 
-* Add hint about issue ```This version of ChromeDriver only supports Chrome version``` to [README](README.md).
+* Added hint about issue ```This version of ChromeDriver only supports Chrome version``` to [README](README.md)
 
 
 1.0.1 / 2019-10-11
 ==================
 
 Misc:
 
-* Use official [```symfony/panther```](https://github.com/symfony/panther) repository instead of own repository [```robertfausk/panther```](https://github.com/robertfausk/panther) 
-* Add more badges to [README](README.md) (SensioLabsInsight, Software License, supported PHP versions, Open/Closed Issuse and Contributors)
+* Used official [```symfony/panther```](https://github.com/symfony/panther) repository instead of own repository [```robertfausk/panther```](https://github.com/robertfausk/panther) 
+* Added more badges to [README](README.md) (SensioLabsInsight, Software License, supported PHP versions, Open/Closed Issuse and Contributors)
 
 
 1.0.0 / 2019-08-16