Whatdid v0.1.16

Feature Changes

• restore state on startup by @yshavit in #338
• first pass at usage tracking by @yshavit in #351
• add a few usage tracker calls by @yshavit in #352
• button to go from PTN to EOD report by @yshavit in #353

Note: This release is almost identical to v0.1.15, except for a small tweak to the "what have you been working on" prompt.

Behind-the-scenes changes

• create a separate UserDefaults in UI Test mode by @yshavit in #341
• Build without Sparkle, for app store distribution by @yshavit in #335
• update dependencies (Sparkle and KeyboardShortcuts) by @yshavit in #337
• refactor prefs pane to three separate controllers by @yshavit in #350

Full Changelog: v0.1.14...v0.1.15