Release for v0.4.0

[oooookk7]

Note that PR requires the release of SkylinkJS 0.6.25.

Changes:

• Added query parameter ?mcu which accepts 1 or true to enforce MCU connections instead of prefixing "m" room names.
• Added query parameter ?forceTurn which accepts 1 or true to enforce TURN connections.
• Added query parameter ?signalingNode which allows custom configuration of Temasys Signaling server. E.g. https://signaling.temasys.io:3443
• Added query parameter ?turnNode which allows custom configuration of Temasys TURN server. E.g. turn:turn.temasys.io:3478
• Added query parameter ?forcePlugin which allows Temasys WebRTC Plugin to be enforced in Safari 11 for WebRTC connections.
• Added query parameter ?media which allows users to share audio and video when its av / va, audio only when its a, share video only when its v and no media when its none.
• Added query parameters ?appkeyId and ?appkeySecret which allows users to debug their custom App key ID and secret.
• Refactored code to append more documentation changes and ensure that "development" branch is ahead of "master" branch without any glaring errors.
• Fixes MCU screensharing layout.
• Virtual cameras should all be retrieved for Temasys WebRTC Plugin users as AdapterJS.options.getAllCams is enabled.

Purpose:

• Make "development" branch up-to-date with "master" branch and "master" branch updated with "development" branch changes without errors.
• Ensure that Safari 11 can be used.
• Remove prefixing of "m" room names.