I should have started this when I first started the game. Sadly it won't be comprehensive because I've already forgotten when some of the changes happened.
The current publicly-available version is 0.5.
0.1
Free public release on my Patreon.
Added core rules and player sheet.
0.2
Paid release on itchio.
Added setting document, The Commonwealth: A Beast Dream.
Art by Cole Riz included in setting document.
Slight format changes in core rules.
SWORDDREAM description and concepts added.
Table of contents given its own page and expanded to include a link to each section.
Added ability to permanently transform monsters as an advancement.
Added a description of how each quality is used in action rolls.
Added the ability to make group actions.
Changed how tier works in battles.
Added section on Diversity and Inclusion.
0.2.1
Typos fixed in The Commonwealth: A Beast Dream.
Additional illustration by Cole Riz added to the monster Ravenglow.
0.3
Universal changes
Monster Master (MM) has been renamed "Game Master (GM)" for simplicity's sake.
Player characters have been officially dubbed "handlers"
Monsters are now "beasts"
Supplemental materials are called "dreams"
Core rules
Renamed Player Moves section to "Handler Moves," Monsters section to "Beasts," Monster Tags section to "Beast Tags," Befriending or Capturing Monsters to "Befriending or Capturing Beasts," Monster Transformation to "Beast Transformation," Example Monsters to "Example Beasts," and Monster Masters to "Game Masters"
Added description of handlers in the player section.
Simplified some language in the Rolling the Dice section.
Added Progress Tracks section.
Renamed Monsters section to "Beasts."
Added Skill and XP to Beasts section.
Slight formatting changes to Beasts section.
Rules change about Beasts performing action rolls (they now use Skill).
New section Trading and Sharing Beasts.
Removed the Example Principles and The World sections.
New section Running the Game.
Moved Diversity and Inclusion section.
New sections Dreams, Agendas, Principles, Themes, Settings, Characters, Unique Rules, and Beasts.
Expanded the Adventures section, including some example adventure seeds.
New sections Building a Dream and Dreams and Creative Commons.
Placeholder Building XYZ section.
Moved Building a Bestiary section to the end.
Handler sheet
Renamed to Handler Sheet.
Added Skill and XP to beast handouts.
New Battle track, Progress track, and Consequence track handout.
The Commonwealth: A Dream
"Beast" removed from title name.
New "What Is a Dream" intro section.
Expanded intro.
Credits given its own page.
Reorganized majority of the document.
New sections Agendas, The Commonwealth as a Setting, Handlers in the Commonwealth, and Rules of the Commonwealth.
Ten new beasts: Floofrel, Florrel, Zepperrel, Incinidrake, Conflagrouse, Swanflagration, Battric, Battive, Abbatsal, and Ivyhead.
New art.
0.5
Core rules
Formatted the entire book in Affinity Publisher.
Removed placeholder Building XYZ and Building a Bestiary sections.
Added in-play examples to most rules in Players and Beasts sections.
Minor updates to almost all existing sections.
Changed how beasts earn XP.
Added art to Example Beasts section.
Handler sheet
Update in progress.
The Commonwealth: A Dream
Update in progress.