bump version to 0.7.0

Add --cf_clearance and --user-agent arguments (#11)

add --group-singles argument

skip already downloaded files and add --force argument

stream files to disk

add --album-year argument

add --flatten-directories argument

use rustls (#1)

add --no-metadata and --private arguments

allow downloading single tracks and from TIDAL

add LICENSE.md

add README.md

initial commit