Missing compatibility features with Shadertoy webseite

[Vipitis]

In this Issue, I will keep a list of features that are present on the Webseite, but not yet in this utility.
The best resource is the shadertoy changelog.

• Common renderpass (append to the compatibility code) Add basic common support #19
• Buffer renderpass (render to texture) Support Multipass shaders (buffer A ...) #30
• Audio shaders, Audio input (sound file, soundcloud?, microphone)
• keyboard input
• pause/suspend and restart key binds (alt+down arrow, alt+leftarrow)
• video input, webcam input?
• iChannel samplers (linear/nearest/mipmap)
• Vflip for channels (maybe introduce numpy as a runtime dependency) Add vflip for textures #26
• missing uniforms:
  • iChannelResolution Add iChannelResolution uniform #18
  • iChannelTime (needed for video/audio?)
  • iSampleRate (needed for audio)
• VR support?

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this isn't an exhaustive list yet and the top comment will be updated
The goal is to support most of the functionality offered on the webseite.