* PEP8 fixes/modifications
* Update tld list
* Fix up arrow bug. Closes 66
* Add optional config file for editing/adding palettes.
* Simplify palette variable to only used values. Cycle through available palettes
* Merge branch 'runtime_palette_switch' of https://github.com/machinedgod/urlscan into machinedgod-runtime_palette_switch
* Fix crash when BROWSER not set. Closes 60, Fixes 63
* Don't handle mouse events. Fixes 65.
* Hitting 'b' key now switches palettes
* Allow https URLs for images
* Add 51. Execute arbitrary expression for URL in place of opening browser.
* More fixes for 48. Refresh screen after text browser use
* Fix 49. Deduplication display issue.
* Fix 50. Detect and add ability to remove escape char \ from URLs.
* Fix 48. Prevent loading thread from affecting screen when using
* terminal browsers.
* Add g/G as top/bottom keyboard shortcuts. Fix 47