v0.2.3

• Item tab: a two-line header (title with its number, then the state as coloured text with the author, branches, age, review state and unresolved threads); size, check state and comment count live on the section tabs; Fold all moved to the tab row; edit actions moved into ⋯; "Has conflicts" sits next to Merge.
• Preview tabs: a click opens an issue or pull request in the preview tab, which the next click replaces; double-click, "Open in a new tab" or creating an issue keeps it; ⌘-click still opens GitHub.
• Lists: one toolbar row: a scope menu showing the count (Open · 1,455), search, sort, filters and more; refresh and new issue moved into more.
• Files: one row says how many files and how many you viewed, with the file index folded behind it; index rows and diff cards line up.
• Hover states: rows keep their content under the pointer (the row menu takes only the time's slot), the selection checkbox appears only on the state icon, and fold headers brighten instead of filling with grey.