Improvement: Changed the sorting mechanism to only sort tabs that need sorting (instead of all tabs) to improve performance.
Improvement: Content categories can now be created, deleted, and reset. This option is accessible via the new “Show More Options” button.
Improvement: jar‐scheme (jar:) URLs are now part of the “Browser” category.
Improvement: “Tab category rules” are now called the “content category rules”.
Improvement: The content category rules dialog has been rebuilt and is now a table with editable table cells and explicit controls for adding, deleting, and moving rules instead of two columns of freely editable text; this ensures that every rule component lines up horizontally and should ensure that text manipulation behavior is completely predictable.
Improvement: The content category rules dialog rules can now be navigated via arrow keys.
Improvement: The content category rules dialog no creates new lines with “/” or “Separator=|” text. (Text was added as a workaround for the selection caret being misplaced in empty lines. An alternative workaround has been implemented.)
Improvement: The extension now has responsive layout to accommodate viewports under 1400 pixels. (In other words, the extension should behave better in smaller windows and on smaller screens.)
Improvement: There are now consistent background color and text hover effects for all buttons, tabs, and text fields.
Improvement: Miscellaneous UI tweaks (fonts, content placement, <span xml:lang="en-latn">etc</span>).
Bug Fix: All category views now show the correct tabs when viewed before the initial tab list has been populated.
Bug Fix: Clicking the “Collapse Titles” and “Expand Titles” buttons will no longer trigger an infinite loop that causes Firefox to freeze.
Bug Fix: Content category rules no longer suffer from data loss when saved. (Regular expressions must be saved as strings when using Firefox’ storage API.) (This means that any previously “saved” rules were not saved in a usable form and will be discarded.)
Bug Fix: Tab links will now be correctly updated when tab URLs change. (I inadvertantly wrote code to update links’ src attributes instead of their href attributes.)
Bug Fix: The content category rule for wiktionary.org was corrected (from wiktionary.com).
Bug Fix: The content category rules dialog now correctly handles the pasting of text containing line breaks.
Bug Fix: The URL sorting mechanism now works. (I inadvertantly broke it when removing unused code before submitting version 1.0.0.)

Fixed a CSS‐based regression in which tab category rule text field lines weren't given a default height in case they were empty.

Added CSS to fix tab title overlap when tabs are displayed without screenshots (e.g., restored tabs).

Fixed a typo (.com→.org) in the tab category rule for Wikipedia.