marker single tap listener by armancodv · Pull Request #5125

marker single tap listener by armancodv · Pull Request #5125 · PhilJay/MPAndroidChart

PR Checklist:

[*] I have tested this extensively and it does not break any existing behavior.
[*] I have added/updated examples and tests for any new behavior.
[*] If this is a significant change, an issue has already been created where the problem / solution was discussed: [N/A, or add link to issue here]

This MR adds a new method to the gesture listeners for tapping on the marker view.
issue #144

It doesn't remove anything, it just adds a new listener to OnChartGestureListener.

It could be helpful for cases that users need to customize data by tapping on the marker.