Add some ideas.#1

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silee2 wants to merge 8 commits intomasterfrom

silee2/startover

Commits on Jul 22, 2020

Add notes.
silee2
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Commits on Jul 27, 2020

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silee2
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Commits on Aug 26, 2020

Commits on Aug 27, 2020

Commits on Sep 3, 2020

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silee2
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Commits on Sep 14, 2020

update.
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