What

Fixes #135.

• Modifies color parser in vis-core to support hex strings that are missing a hash
• Fixes a bug on makeRGBAColorVector when normalized = false where color values weren't being normalized
• Added tests to prove it works

How

• Update Regex to have an optional # and add hash if it's missing from input
• Pass normalized variable to makeRGBColorVector call in makeRGBAColorVector
• Wrote tests for each scenario possible with the functions

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