status: fix crossfade being shown in status when other options are being toggled
news: add dates to previous releases and uniformize formatting
authors: list everyone who ever contributed to the project
news: add news since 0.6_beta5
doc: comment out data_fetching_delay
news: change release date of 0.6 to unknown
settings: fix copypaste error that was overwriting regex_type
update NEWS and change version to 0.6
change version to 0.7_pre
visualizer: add support for multiple colors
visualizer: add filled wave visualizer
visualizer: add an ellipse visualizer (stereo mode only)
visualizer: make ellipse mode have concentric ellipses
visualizer: fix ellipse color scaling
visualizer: ellipse is now closer to circular and the colors change faster
visualizer: added some comments on new modes
update visualizer-related documentation
visualizer: simplify DrawFrequencySpectrum
visualizer: simplify DrawSoundWave
visualizer: simplify DrawSoundWaveFill