Show index changes for files

[sczerwinski]

It would be great if the plugin could somehow display executable flag for altered files and highlight files for which the flag has changed (preferably in "Commit" tool window: CommitToolWindowFactory?).

In the following example, this would come from first 2 columns:

> git diff-index HEAD^  
:100644 100644 7454180f2ae8848c63b8b4dea2cb829da983f2fa 0000000000000000000000000000000000000000 M      gradle/wrapper/gradle-wrapper.jar
:100644 100644 69a9715077f4fe68764b2e50867736b0c7f015a2 0000000000000000000000000000000000000000 M      gradle/wrapper/gradle-wrapper.properties
:100755 100755 744e882ed57263a19bf3a504977da292d009345f aeb74cbb43e3931a2455a838345c3f6b8131aaa2 M      gradlew
:100644 100644 107acd32c4e687021ef32db511e8a206129b88ec 0000000000000000000000000000000000000000 M      gradlew.bat