- similar to AnalyzeDialog

- every seven days

- when this version become old one

- because single note mode is set and it is not going to be shown

- but don't do that if user still wants to see 'Got It!' info

- seems like QLatin1String::arg() is not yet supported there

- creates melody preview only when visible on the list
- is capable of reordering by dragging or from code

Qt Audio stack needs adjustments according to RtAudio
A lot of visual glitches

Restored bar charts but using QML. Displaying Y axis values, expose misc chart settings again. Method for disabling entries in combo, so chart type can depend on it.

Charts were rewritten to QML (in progress). Using ListView (ChartView.qml) with delegate (so far LinearDelegate.qml with C++ logic in TlinChartDelegate). So get rid of Qt graphics scene (a lot of code was removed or commented, some files are going to be deleted).
It dramatically reduces RAM usage (comparing to previous 1.5 alphas is hundreds of MB, comparing to 1.4 is plenty) - because only visible part of a chart are painted (rendered)

Added table of contents button to help page with menu to select other help contexts available in the app (exam/exercise difference, exam help). Expose that texts to QML. Moved obtaining license text from TnootkaQML to TdialogLoaderObject.

Use Nootka 'one' settings. Fix 'General' group occurrence in settings (it is default name, no need to set group for it in QSettings). Show 'about' window when version changes.

Brought back updater, but as a part of main Nootka executable. No more plugins - all that code deleted. TdialogLoaderObject handles background check invoked by main or visible check from GlobalPage.qml. Still QWidget dialog with changes. But using QVersionNumber to determine also when current version is newer than online one - testing/devel, then don't show the dialog.

Fixes:
 - properly show accidental in note cursor - fix alter text generation
 - layout in melody page when list of melodies is selected
 - minor

Improved wizard. Added left image so every wizard page had to be wrapped by 'Item' component to keep 'SwipeView' working.
TdialogObject class provides main help text (required in previous commit)

Restored charts functionality (partially) - QML Window with painted quick item rendering old chart scene
Moved common q/a texts to TnootkaQML

Dialog with params for generating random melodies. Selecting rhythmic groups also there, so special control for it. Randomizing rhythms and improved algorithm for generating random melodies.

Added tuner dialog, invoked from tempo bar (suitable button). Suspending sound signals to score and instrument when tuner is opened, stop metronome then as well

Create actions only when Qt was initialized (in TnootkaQML::setQmlEngine method). It fixes crash on slower machines. Moved about Qt text method to dialog object.

Implement exam tips handling - Tcanvas becomes tip handler, sends signal to executor item and tips (start tip so far) are created. Nice initial tip animation and dragging is done. Moreover - scaling tip with main window resizeing as well

Merge tprogresswidget into texamview, create ExamResults.qml in MainWindow to properly handle events (mouse area, sizes)

Using old code of TexamView and TprogressWidget as a logic for QML representation of exam results in ExamResults.qml. Enabling more code in executor