single node movements

[bj97301]

Checklist

• [x] I've tested my changes.
• [x] I've read the Contribution Guidelines.
• [x] I've updated the documentation if necessary.

Motivation and Context

I wanted to allow the user to move an individual node.

Description

Allows for single node movements. Also exposed a field for making it easier to select a node: nodeSelectionForgivenessDistance.

[bj97301]

Found an issue while trying to select a node on an iPad. Looking into it now.

[bj97301]

K fixed

[bj97301]

Going to take a look at the codebeat thing tomorrow

[efremidze]

Don't worry about Codebeat, Ill review the PR later today

[bj97301]

@efremidze I am still making some tweaks fyi. I will give you a heads up when its more finalized.

[bj97301]

@efremidze I am feeling better about the pr now. Feel free to check out the new changes at your convenience.

[efremidze]

Ill review it this week. I might want to make some changes.

[efremidze]

I'll try to include this asap

[bj97301]

Woot. Thank you. Now that xcode 9.3 is out let me know if you want me to resolve the conflicts first.

[chintanMaisuriya]

Hello guys, I didn't found this individual node movement feature in the latest release. How can I get this? Please help, Thanks.