Add support for m3u8 files and parameters after file name in URL

Add traytips/toasts, slightly optimize code

Add check for identical filenames in multiURL list

if duplicate filenames are found, the last occurence is used.
The current RD bug should be taken care of now.

Add check to ignore if user copies the same link(s) multiple times in…

… a row

Various improvements

Ditch PP's "/clipboard", add code for multi-URL handling

App now sorts videos by filename and adds them to PotPlayer queue one by one :)

Fix Regex, add multiple URL support

Note: Due to command-line switch limitations of current PotPlayer, sorting does not work for multiple URL ("/clipboard") switch. It is also impossible to use multiple URLs as the "content" for command-line launch. Adding multiple URLs by command-line will also force you to lose your current playlist.

Update README.md

Update README.md