Merge pull request #5 from whmsysu/master

Add a feature of deleting the corresponding row if the download thread finished
Merge pull request #6 from whmsysu/develop

Fix the bug that the program will be crash if the data parament is nil
update Contributors
Merge pull request #9 from whmsysu/AddNotification

Add a new feature that pop out a notification if all download tasks finished
- update develop version to v0.5.3.
- fix notification center  problem, that videos mix no subtitle video will cause no notification.
Merge pull request #10 from whmsysu/FixTheNoSubBug

Fix the no sub bug
small notification change
Merge branch 'pr/11' into develop

Conflicts:

ShooterSubX.xcodeproj/project.xcworkspace/xcshareddata/ShooterSubX.xcche
ckout
Merge branch 'pr/12' into develop
Merge pull request #13 from whmsysu/AddSortingFeature

Add a new feature that allow users to press header to sort the corresponding column
Merge pull request #14 from whmsysu/AddTheRestAppIcons

Add some some app icons into the appicon in Images.xcassets
Merge branch 'pr/15' into develop
Merge branch 'develop' of https://github.com/gogozs/ShooterSubX into develop
delete unnecessary comment.
- Notification localize.
- Add contributor in About window.
remove unnecessary state.
change version to v0.5.4.
change version to v0.5.4.
Merge remote-tracking branch 'origin/develop' into develop
- Filter qualified file extension.