Inky

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* BugFix: Raise Impression/7Color/UC8159 busy wait timeout from 15s to 30s

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* BugFix: inky high-temp red fix
* Enhancement: SSD1608 (250x122) set_border support

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* New: inky impression set_border support
* BugFix: inky impression orange colour
* BugFix: inky impression invalid arg bug for Python 2
* New: inky impression simulator

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* Enhancement: drive UC81559 CS with GPIO to avoid conflict with Grow workaround
* Add 7-colour/UC8159 specifics to EEPROM
* BugFix: define UC8159 colour and size constants in class
* BugFix: fix auto to grab args properly, support UC8159 and fallback gracefully

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* New: Support for UC8159-based 7-colour 600x448 display
* Enhancement: auto now includes options for fallback
* Enhancement: EEPROM can now give text string for display variant

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* Enhancement: Always install Pi dependencies