Add GCF imagemagick samples#1684

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ace-n merged 8 commits intomasterfrom

Sep 27, 2018

Commits on Aug 31, 2018

Initial commit of imagemagick sample
Ace Nassri
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Commits on Sep 4, 2018

Add unit tests + get them passing
Ace Nassri
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Commits on Sep 5, 2018

Get sample working on GCF
Ace Nassri
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Commits on Sep 12, 2018

Address comments, pt 1
Ace Nassri
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Address comments, pt 2
Ace Nassri
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Use UserDict instead of DictObject
Ace Nassri
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Commits on Sep 14, 2018

Address comments
Ace Nassri
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Commits on Sep 26, 2018

Use format strings + make function idempotent
Ace Nassri
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