Add support for an optional menubar

[jwlodek]

Is your feature request related to a problem? Please describe.
A menubar similar to GUI applications with "File/Edit/View" etc. dropdown menu options

Describe the solution you'd like
A new module should be developed to add support for a menubar. The menubar should not be enabled by default, and should be added with a function enable_menubar. Then, functions in a MenuBar class for adding menu items and submenus. The menubar should support mouse events as well as keybindings.

Additional context
A good solution might be to have to dropdown take up a third of the screen vertically, and maybe something like a quarter or fifth horizontally.

[i2]

Hi, I was wondering if there has been any movement on this feature request? I am very much interested in it too!

Also, looking at the branches, if I may make some suggestions:
I notice that the following branches could be deleted (they are all merged in master). This will make the repo tidier:
v0.1.4-develop
v0.1.5-develop
add-custom-widget
menu-empty-check

This branch has some non-merged commits:
slider-mouse-support

[jwlodek]

There has been some indirect progress toward this, in that a dropdown menu widget has been developed, although is not yet included in a released version of the library: 2f6d2d7. Using the dropdown menu, it shouldn't be too difficult to develop some kind of MenuBar solution, although lately I've had no time between work and other things to work on my side projects.

Thanks for the suggestions regarding the branches, I'll do some cleanup when I have a chance.