DOSee

Changes and updates

Made DOSee into a Progressive Web App that allows installation to a desktop.
Added basic offline support using Workbox.
Rearranged the source files and subdirectories to require a build initialisation
Changed page layout to center-align the canvas and form.
Added a favicon for bookmarks.

Introduced breaking meta element name changes.

Help tab is implemented and functional
Added a browser protocol check and user notification to handle some cross-origin request issues
Fixed glyph display issues on macOS
Fixed DOSee.newQueryString() incorrectly handling URLs that lacked # symbols
Replaced depreciated onkeydown.which property usage with onkeydown.key
Navigation keyboard keys will be restored if DOSee has been stopped
Form labels now do not wrap over multiple lines

Now requires npm or Docker for installation as the installation scripts have been removed.
Added DOSee prototype object that is accessible from window.DOSee. It is now used to access all the custom DOSee function additions.
Added DOSee.exit() that will end the emulation and remove all event listeners created by Emscripten.
Added DOSee.canvasResize() that uses Emscripten to resize the canvas element.
Added dosee:spacekeystart meta element to disable the Space key to start DOSee feature.
Removed the right-click menu over the canvas blocker that was used by The Emularity, there are a couple of screen capture items instead.
Isolated the variables and functions in dosee-init.js so they do not pollute the window global scope.
Now gracefully handles missing, expected form elements.

Added a PowerShell install script for Windows (and PowerShell Core) users.
Replaced doseeVersion string with a version Map() object.
Replaced the use of the outdated and broken screenfull library with the Fullscreen API.
Fixed missing dependencies false-positives.
doseeTabs links now anchor back to <header id="doseeTabs">