Log Message:
www/hackernews-tui: update to 0.9.0

What's Changed
-Rewrite theme structs in #54
-Tweak application UI in #55
-[#51] add font highlight for CommentView and StoryView in #56
-Add story tag navigation commands in #57
-Add font highlighting for ArticleView in #58
-Update documentation and configuration structures in #59
-Integrate comfy_table in #60
-Pre-release v0.9.0 in #61

Breaking changes
-There are a lot of breaking changes regarding the config options and the
 corresponding default values. It's highly recommended to read the config
 documentation or the example config file to migrate from the old versions.