Miaozaiye#16

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miaozaiye wants to merge 6 commits intomasterfrom

Commits on Oct 1, 2017

add sound in G-ball & clock
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Commits on Oct 7, 2017

add tune in dragon_line
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add tune in circle.py
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Commits on Oct 12, 2017

update spirograph with sound
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oscilloscope.py
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update
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