[Pre-release] v0.2.1-alpha.4+13

This is the release candidate 1 for Thunder v0.2.1+13! Given that there are no more major issues present in the pre-releases, this will be the version that will be released to the general stream.

Be fully prepared to know that these pre-release versions may contain major bugs which could cause Thunder to crash or behave unexpectedly.

These are the changes that have occurred since the last pre-release:

• Fixed issue where the app was preventing you from voting or saving multiple things within a short timeframe
• Adjusted way permissions are handled when saving media
• Added subscription icon in post feed when you are subscribed to a given community - contribution from @micahmo
• Adjusted swipe to dismiss on posts to not move divider alongside swipe gesture - contribution from @micahmo
• Minor adjustment to show author icon in Settings - contribution from @micahmo

For a full list of changes since the last general release, see the full release page on GitHub!