Preparing v0.20.0 release

[shijiesheng]

What changed?

Release note for v0.20.0

Why?

How did you test it?

Potential risks

[coveralls]

Pull Request Test Coverage Report for Build 01838bad-91c2-4b31-a532-90193423082c

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 64.151%

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Totals
Change from base Build 01838582-1814-4eb0-a654-48c8844fff22:	0.01%
Covered Lines:	12607
Relevant Lines:	19652

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💛 - Coveralls

[davidporter-id-au]

As discussed internally, let's upgrade cadenceFX before doing a release

[shijiesheng]

stale PR not needed anymore