[Fix]
- Crash while DCIM/Camera folder not exist.

[Update]
- Write images and notify manually instead of using MediaStore.Images.Media.insertImage.

[Update]
- Migrate groovy to kotlin to write build scripts.
- Support multi productFlavors.
- Update version code and version name.

[Add]
- Support alpha adjust seekBar.
[Update]
- Disable Viewpager touch gestures.
[Fix]
- Try to hiding SaveImageBSDialogFragment.

[Add]
- Change log dialog.
- Compressor library.
- Add contributor info in email.

[Update]
- New Icon!
[Fix]
- Adjust saving image for api lower than Android Q.