Fixed a regression with identifying the target if the browser doesn't…

[mpilone]

… support composedPath or path.

This is a regression introduced with #22 and #21. The original code before the PR would use srcEvent.target:

// find the correct target
let target = manager.element;
if (hasParent(input.srcEvent.target, target)) {
  target = input.srcEvent.target;
}
input.target = target;

After the PR it was using target directly:

...
} else {
    srcEventTarget = target;
  }

This causes an issue on browsers that fall into the final else block like IE and Edge. This PR restores the original functionality of using srcEvent.target:

...
} else {
    srcEventTarget = srcEvent.target;
  }

[WoodNeck]

Hello again @mpilone!
Looks like there was a mistake in the previous code, really thanks for checking that.
The PR looks good to me.

[daybrush]

Thank you for your PR.

[WoodNeck]

Hey @mpilone! I just released a new version(2.0.17) with a fix in this PR.
Check it, please ;)
(Also, I've modified your commit message to match Angular commit style guidelines that we use)