1.3.1.0

-Fix- Fixed title bar text not changing to loaded file name
-Fix- Fixed a problem where using crop, scale, and settings that force intermediate file creation would cause the output video to be skewed
-Fix- Fixed intermediate file creation producing an error and leftover file if the user canceled the second manual entry popup
-Feature- Closes #8 by adding the ability to hold a number key while pressing keys to control trim sliders, skipping between 1 and 10 frames