release: 1.8.0

[mistydemeo]

I've also presumptively added myself to the maintainers list.

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This release contains a number of new capture features. It also removes support for Python 3.8.

• The new --disable-video-capture commandline flag allows excluding video captures in the brozzler-new-site commandline tool. (brozzler-new-site: add flag to disable videos #379)
• When video capture has been disabled, brozzler will no longer browse YouTube UMP packets. (Video exclusion: skip YouTube UMP packets too #378)
• Audio content types are now also skipped when video capture is disabled. (worker: skip audio content-types for media exclusion #380)
• It's now possible to control whether Chrome is launched in headless mode using the --no-headless commandline flag and the headless keyword parameter in the Chrome.start method. The default hasn't changed. (Add headless option to Chrome.start #373)
• Improved performance when visiting page anchors. (Track network activity and wait for idle when visiting hashtags #394)
• Improved compatibility when fetching robots.txt and page headers by enabling legacy renegotiation and disabling errors from unexpected SSL EOFs. (ssl: allow fetching pages needing legacy renegotiation #411)
• Fixed a bug which could break captures under certain specific circumstances when a page interstitial is encountered. (worker: fix possibly-unbound status code #375)
• The header request timeout has been increased from 30 to 60 seconds. (increase HEADER_REQUEST_TIMEOUT #367)
• Updated the versions of several dependencies.

Thanks to @TheTechRobo for the features in pull requests #373 and #394!