v0.7.5

DSP v0.7.5

Diff since v0.7.4

Closed issues:

• Windows.gaussian behaves strange (#460)
• new version? (#462)

Merged pull requests:

• Rework definition of FloatRange (fix for Julia 1.8) (#456) (@martinholters)
• Include Julia 1.6 in versions to run CI against (#457) (@martinholters)
• CompatHelper: bump compat for "Polynomials" to "3.0" (#461) (@github-actions[bot])
• Bump version to 0.7.5 (#463) (@martinholters)