Link.js v0.2.16

Changelog:

This version sees some major and minor fixes as well as new features.

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1. Fixed .random(times)
2. Added .sample(times)
3. Added overload on .join(delim), no function means we do a string-like array join with a delimiter.
4. Added .split(delim) method
5. Added .shuffle() (fatcerberus)
6. Added .concat(Link)
7. Fixed .invoke(prop_name) to respect parent this object.