Tiny correction.
Fixed a parsing issue.

1. Some m3u file cannot be parsed correctly because of a mistake on
handling the quotation marks in the lines.
2. I also added the prefix "tvg-" and suffix "-tvg" support
Fixed a crash bug.

Follow the steps, the app will crash.
1. Click on a channel
2. Before the channel starts play, click on another channel.
3. It will crash.
Update the version number.