Merge pull request #5 from vikaig/patch-1

Update README.md: Use ninja -С

chore: delete accidentally commited temp UIs

fix: add bottom margin to last task widget

Merge branch 'feat/overtime'

feat: make progress bar red when TaskGoal overtimed

feat: do not block start button when TaskGoal finished

feat: don't stop timer for TaskGoal

Merge branch 'fix/scrolled-window-bug'

hotfix: "create task" layout mess

fix: black GooCanvas background when viewport bigger than placed widget

fix: extract main_stack from GtkScrolledWindow

refactor: introduce iTask interface

Merge branch 'refactor/model-cleanup'

refactor: rewrite interaction with task models in widgets