For those people interested in the changes included in the update for
Shovel Knight from version 3.0A to 3.3 (since GOG didn't care to include any changelog at all) I've copy and pasted the massive changelog from
Yacht Club Games website:
3.3
New: During end game credits, an icon will be displayed next to stages which have successfully had all checkpoints broken.
Fix: Teethalon sometimes moving slowly throughout the entire chase sequence.
Fix: Player 2 resetting controller bindings to default would resets Player 1’s bindings as well.
PC
New: The Battletoads join the fray! While playing as Shovel Knight, kick off this very special encounter by uncovering a double secret room in the Hall of Champions.
New: Device detections and icons for Switch controllers (Pro Controller and Joy-Con) as well as Xbox One controllers.
New: Mouse buttons can now be bound to gameplay actions. LMB, RMB…you name it!
Fix: PS4 controller now properly displays “Share” as Select, instead of incorrectly displaying the Touchpad icon.
Fix: Using the number row to change relics in co-op would change both player’s active relic.
Fix: Incorrect fullscreen monitor displaying in the Options Menu.
Improvements to keyboard key icons so they take up less space.
Shovel of Hope
Fix: Alternating between Toad Armor and Dust Knuckles would create inconsistent punch flips.
Fix: Completing the game with no items collected would round up to a 1% item completion. It should now display 0%.
Fix: Playing certain songs at the Bard resulting in erroneous playback when transitioning indoors or underground.
Fix: Aerial Mobile Gear could be interrupted by Tinker wrench.
Fix: Initially unable to use subweapons during battle with Mr. Hat.
Plague of Shadows
Fix: Rematch: Shovel Knight alchemy power meter never fully refilling.
Fix: Erroneous screen transition when falling into the right most pit in the final anchor room of Iron Whale.
Fix: Liquid Samurai could be pushed off ceilings by Vat arcana.
Fix: Plague being invisible and immobile when caught in a double KO with the final boss.
Specter of Torment
Fix: Curio Upgrade menu could not be advanced with the Start button, unlike other menus that do not use Start for another action.
Fix: Using Cold Shoulder after a certain dancing scene would pause the animation (the coldest of shoulders).
Fix: Specific timing would enable movement while still in a nearby shop after speaking with Red.
Fix: Defeating Tinker Knight very, very fast with cheats resulting in unintended behavior.
Fix: Being killed by Propeller Knight moments before a phase change would bring Specter back with no health.
Fix: Reize would appear incorrectly when defeated mid-teleport.
Fix: Plague Knight would sometimes appear without contact damage active after a teleport.
Fix: Performing a unique pose in a certain armor set is now duplicated by Blood Mirror (Yeah! Yeah! Yeah! Yeah!)
Fix: Getting hit right when beginning a rail grind would cancel out death.
Various localization and menu prompt spacing fixes.
Various improvements made to co-op play.
Various improvements made to Battletoads encounter and rewards.
3.2
New: Japanese language options added (Kanji and Kana).
Fix: (Shovel) Crash would occur when changing a single Body Swap setting for a boss, failing at that boss, and then revisiting the encounter.
Fix: (Shovel) Respawn point drifting farther back during many repeated deaths at the Hall of Champions boss.
Fix: (Plague) Failing to defeat Black Knight on the world map could sometimes lead to multiple encounters occupying the same space.
Fix: (Specter) Specter Knight losing active attack frames when releasing a charged slash at the very end of a rail.
Fix: (3DS) Crash would occur when changing costumes or using Bomb Burst while playing as Custom Knight or within amiibo Challenges.
Fix: (3DS) Crash could sometimes occur when selecting certain items as Plague Knight using the touch screen while playing in French, Italian, or German.
Fix: (Xbox) Crash would occur when completing the Turbo Tunnel mini-game in co-op.
Fix: (Xbox) Crash would occur when completing the Turbo Tunnel in Challenge Mode.
Fix: (PC): Lock up ould occur if the game window immediately lost focus on boot with certain option settings.
Various text fixes for Body Swap mode.
Various localization and text improvements.
3.1A
Fix: (Switch) Game starting in English when Switch system language is set to Japanese.
Fix: (Switch) Crash that could occur when scanning amiibo frequently throughout long play sessions.
Fix: Random armor cheat sometimes resulting in an unusable armor set.
Fix: Bugs in certain lines of dialogue while playing and changing settings in Body Swap mode.
3.1
Various localization and text improvements.
Fix: Crash when changing Body Swap settings for only a single Boss, while fighting that Boss, falling in battle, and then retrying the encounter.
Fix: Minor text error when changing game’s language under certain Body Swap conditions while on the Level Map.
Fix (Specter): Starting Black Knight, Phantom Striker, or Treasure Knight with Skeleton Sniper or active lantern flames causing erroneous behavior.
Fix: (Specter): Luan jumps prioritized better when backtracking through a room.
Change(Specter): Adjusted visibility of certain background tiles found in Tower and Flying Machine stages.
Fix: (Plague): Shadow blocks being destroyed by having an orbit bomb active during the penultimate boss battle.