Create PatchNotes.md

added patch notes to docs

docs/PatchNotes.md

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+# Version 0.2.0
+## The "Fix and balance safari mode" update
+Release Notes:
+* Version flags and rom names have been normalized to "LetsGoEeveeGB" and "LetsGoPikachuGB"
+  * Internal rom names are LETSGOGBEEVEE and LETSGOGBPIKA
+* Capture rate formula has been completely re-written since all balls are Great Balls.
+  * Capture formula now uses wild mon's level
+  * Capture rate is boosted for each badge the player has earned
+  * Capture rate is boosted for each 8 pokemon in the player's pokedex
+  * It felt pretty good in single testing but I didn't get to test higher level pokemon
+* Flee rate for wild pokemon has been completely reworked
+  * Starting flee rate of (WildPKMNSpeed % 256 * 2) is unchanged
+  * NEW: Each turn gain additional flee rate equal to 1/8 base speed
+  * NEW: Each unsuccessful capture attempt grants flee rate equal to 1/8 base speed
+  * Unchanged: Run when flee is above 255 or random(255)
+  * On average the player should have around 4 turns for mid-level pokemon with average speed stats before fleeing
+* Throw rock and Throw bait are disabled. You can click them all you want but nothing will happen
+  * This is because neither were being used in the new capture or flee formulas
+* Transfer to Oak now grants 1 base reward from the reward table and 1 GREAT_BALL
+  * NEW: Pokemon over level 25 grant +1 reward
+  * NEW: Pokemon over level 50 grant an additional +1 reward
+
+# Version 0.1.2 "BIG BOY"
+## The "Wow I broke it all" Update
+This release fixes a flippin' ton of bugs and aims to make the gameplay smoother and more fun. There are still some known issues make sure to check the readme.
+
+Saves are incompatible with 0.1.0 and will be detected as corrupt because I added to the SRAM.
+
+Release Notes:
+* Transfer to Oak mechanic fixed to give consistent rewards.
+* Starter Pokemon changed to Eevee and Pikachu
+* Rival Starter changed to opposite of player
+* Rival will choose an Eeveelution and different party members per save file
+* Experience gains have been normalized to a 3 Pokemon party when capturing.
+  * This means you are encouraged to have more pokemon in your active party when capturing wild pokemon
+* Prof Oak rewards the player with 12 balls after returning his parcel to him to help get you started
+* EXP ALL text removed. WARNING: DO NOT ACCEPT EXP ALL FROM OAK'S AIDE. Doing so may break your save in a future update
+* Old Man tutorial no longer uses Safari Mode and spends the player's balls
+
+# Version 0.1.0 "First Release"
+## The "This game is actually kinda playable as I envisioned it" update
+First release. Very buggy
+Release Notes:
+* All wild encounters now use Safari Mode
+* Modified backsprites for Vulpix and Clefairy
+* Fixed the Focus Energy bug and reworked critical hit rate
+  * Crits happen 8.75% of the time
+  * Focus Energy and High crit rate moves both add an additional +8.75% crit rate
+  * Crit rate currently tops out at roughly 27% (this may need adjustments)
+* Gen 1 missing was removed.
+  * Note that some moves like Tackle have 90% accuracy in Gen 1
+  * Also note that enemies have a static 25% miss rate when using stat reducing moves (EG Growl, Sand attack)
+  * If something misses that shouldn't, let me know
+* All party mons gain EXP when capturing a wild pokemon
+  * This currently mimics EXP ALL and will be changed in a later update
+* Ditto is now encountered in imposter battles and has been removed from encounter tables
+  * All wild battles have a 1.1% chance to instead be a pre-transformed ditto
+* The player can only use great balls in safari mode so I standardized those across all shops
+  * Great ball price lowered to 500 from 600
+  * Also changed the master ball reward to some great balls
+  * Also changed all ball pickups on the ground to be great balls
+* Great balls are renamed to Poke Balls. This is a text only change
+* The PKMNCenter PC option "Release" has been relplaced with "Transfer"
+  * Transferring pokemon to Oak via the PC rewards players with items
+  * Since moon stones are on the rewards list they now sell for 1050P$