Extensions logging GA - only merge after all other Extensions branches

[sgryphon]

WARNING: This will release the package.

This is the final task in Extensions GA #95, to remove the packable=false restriction, which will allow the package to be released.

Only merge this after the other remaining Extensions GA items are merged.

Closes #95

[ghost]

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• Build Cause: Started by user Russ Cam

• Start Time: 2021-06-02T06:20:15.077+0000

• Duration: 18 min 42 sec

• Commit: 8fad9b7

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Passed	80
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Total	80

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[russcam]

@sgryphon I'm looking to merge this in for a 1.6.0-alpha1 release