Simple GTD-style todo list for the command line. http://forge.jan.systems/todolist.git/atom?h=master 2017-10-03T11:20:41Z 2017-10-03T11:20:41Z Grant Ammons gammons@gmail.com 2017-10-03T11:20:02Z urn:sha1:08deecf1954f6cf748812057ba5cdd9a0425bfc9 This change refactors the formatter to be an interface called Printer. `NewApp` will use the functionality of `ScreenPrinter`, which is what I refactored the old `Formatter` class into. There is a new class the implements the `Printer` interface called `MemoryPrinter`, which will simply store the `groups` as they were passed to it. This will allow tests in `app_test.go` to become much more powerful, since `App` no longer needs to be tightly coupled to printing to the screen.