sscan - text UI for scanning with SANE

	Commit message (Collapse)	Author	Age
*	missing type signatures & alignment	Sean Whitton	2017-03-02
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*	remove redundant imports	Sean Whitton	2017-03-02
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*	tighten up rows of the UI	Sean Whitton	2017-03-01
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*	comment	Sean Whitton	2017-03-01
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*	factor out	Sean Whitton	2017-03-01
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*	properly handle scanning single page PNGs	Sean Whitton	2017-03-01
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*	implement new action handlers in UI	Sean Whitton	2017-03-01
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*	tidy up	Sean Whitton	2017-03-01
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*	put command into scansess & rework	Sean Whitton	2017-02-28
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*	split IO out of UI	Sean Whitton	2017-02-28