* Set 'max-height' property to menu actor.
* Reduce size of menu items.
* Rename 'draw-on-your-screen-menu-separator' style class to 'draw-on-your-screen-menu-separator-item' because it is relative to the item actor, not the item._separator actor.
* Rename 'draw-on-your-screen-separator' style class to 'draw-on-your-screen-helper-separator' not to confuse with menu separator.
* use var to export extensionJs.manager
* remove duplicated (old) buildPrefsWidget
* set OsdWindow.HIDE_TIMEOUT in a try/catch because HIDE_TIMEOUT is not exported with 'var'
* capture i in callbacks in for(){} (i is changing)
* add 3.24 version as supported
* GS 3.34 compatibility for barLevel, see for example status/volume.js StreamSlider.getLevel():
* 3.32 : "return 100 * this._stream.volume / this._control.get_vol_max_norm();"
* 3.34 : "return this._stream.volume / this._control.get_vol_max_norm();"
* allow 0 px lineWidth because stroke lines cannot have color with some transparency
* use warning color in OSD and drawing menu when lineWidth is 0 px
* PanelMenu.Button actor
* PopupMenu.PopupBaseMenuItem, PopupMenu.PopupSwitchMenuItem and PopupMenu.PopupSeparatorMenuItem actor
* Slider.Slider actor and 'value-changed' signal
* PopupMenu.PopupMenuManager init params
* 'org.gnome.settings-daemon.plugins.media-keys' setting values : string -> array of strings
use Gio FileIcon instead of Pixbuf because St.Icons made with Pixbuf are
not themable
replace 'stroke' icons with 'fill' icons
bind fill and dashedLine icons with properties
In test of gnome-shell 32 (in VM), 'style-changed' was regularly emitted
during drawing, so all 'this.current...' style properties was
initialized and it was impossible to select style with 'Ctrl+...'
shortcuts.
Now style is gathered on drawing mode entered, which is by the way more
frugal.
Keep watch possible regressions.