Added control to set width.
Basic collection view and slider to adjust width.
Adjusted insets of collection view.
Created layout modeled after `UICollectionViewFlowLayout`.
Just going to attach onto `UICollectionViewFlowLayout` instead by subclassing.
Renamed class to `MTZCollectionViewFlowLayout`.
Changed background colors of main view controller and the collection view.
Trying to adjust size of items within layout.
Layout stretching entirely on it own.
No longer needing delegate methods for flow layout and just setting properties.
Updated code to manually set last app version to 0 to be concentrated in file.
Aligning all items to the left with some heavy modifications to code in mokagio’s UICollectionViewLeftAlignedLayout project.

The project is here: https://github.com/mokagio/UICollectionViewLeftAlignedLayout
Attempting to use new layout to adjust item widths to fill collection view's width.
Adjusting custom flow layout to also work with the horizontal scrolling direction.
Testing collection view flow layout with horizontal scroll.
Fixed an issue where the the sizes of cells would be incorrect due to content insets that were not accounted for.
No longer splitting collection view into sections by version number.
Fixed an issue where the text label was not vertically centered in the header.
Using standard `UICollectionViewFlowLayout` because of issues.
Merge branch 'fixes'