Optional clip

[tomwyr]

Currently it's not possible to clip only one side of the chart. Either you need to clip everything or not clip at all.
E.g. I'd like to hide my chart line below left labels area but prevent dot at value 0 from being partially invisible at the same time:

This PR replaces clipToBorder with clipData where clipping of each side can be enabled/disabled.

[imaNNeo]

Hi, there was a problem with master, that's why this branch is failed.
I've just fixed the problem, please update your branch with master,
Thanks.

[imaNNeo]

Excellent,
It is the most straight forward PR I've ever had.
Well done.

[imaNNeo]

And please change target to the dev branch,
because we merge new features into the dev branch, then we bump up the version and ship it into the master with a new version code and tag.

[imaNNeo]

Thanks for your awesome PR.
Hope to see more from you!

[tomwyr]

Thanks for quick review and this awesome package.
Cheers!