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Merge pull request #287 from nanan9177/tutorial

Updated Level 1_7 in Turtle.
Add rotated text to rotate image.
Merge pull request #288 from nanan9177/tutorial

Updated Farmer Level 1_6 to remove constraints on the while options.
Fixed position of text.
Merge pull request #289 from tobyk100/rotate

Rotate
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release 0.0.59
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Fixed core messages
release 0.0.60
release 0.0.61
Use media query to turn off show code for small screens.
Merge pull request #290 from tobyk100/media

Use media query to turn off show code for small screens.
release 0.0.62
Shown ??? for repeat blocks.