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Features
* Added user login / logout with the `u` key.
* Added subreddit searching with the `f` key.
* Added submission posting with the `p` key.
* Added viewing of user submissions with `/r/me`.
* Program title now displays in the terminal window.
* Gold symbols now display on guilded comments and posts.
* Moved default config location to XDG_CONFIG_HOME.
Bugfixes
* Improved error handling for submission / comment posts.
* Fixed handling of unicode flairs.
* Improved displaying of the help message and selfposts on small terminal windows.
* The author's name now correctly highlights in submissions
* Corrected user agent formatting.
* Various minor bugfixes.
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