### Added:
- Apps:
  - NFC: Cyborg Detector (by @RocketGod-git)
  - Sub-GHz: Radio Scanner (by @RocketGod-git)
  - Games: Umpire Indicator (by @RocketGod-git)
- Sub-GHz:
  - Show satellites count with an icon (#215 by @m7i-org)
  - Add Bresser 3CH weather station protocol (#217 by @m7i-org)
  - UL: Add Marantec24 protocol (static 24 bit) with add manually (by @xMasterX)
  - UL: Add GangQi protocol (static 34 bit) with button parsing and add manually (by @xMasterX & @Skorpionm)
  - UL: Add Hollarm protocol (static 42 bit) with button parsing and add manually (by @xMasterX & @Skorpionm)
  - UL: Add Hay21 protocol (dynamic 21 bit) with button parsing (by @xMasterX)
  - UL: Princeton custom buttons support (0x1, 0x2, 0x4, 0x8, 0xF) (by @xMasterX)
- NFC:
  - Add SmartRider Parser (#203 by @jaylikesbunda)
  - Add API to enforce ISO15693 mode (#225 by @aaronjamt)
- BadKB:
  - OFW: Add linux/gnome badusb demo files (by @thomasnemer)
  - Add older qFlipper install demos for windows and macos (by @DXVVAY & @grugnoymeme)
- OFW: Dolphin: Happy mode in Desktop settings (by @portasynthinca3)
- OFW: GUI: Add up and down button drawing functions to GUI elements (by @DerSkythe)
- OFW: RPC: Support 5V on GPIO control for ext. modules (by @gsurkov)
- OFW: Toolbox: Proper integer parsing library `strint` (by @portasynthinca3)
- OFW: Furi: Put errno into TCB (by @portasynthinca3)

### Updated:
- Apps:
  - WAV Player: Better fix for unresponsiveness, handle thread exit signal (by @CookiePLMonster)
  - Laser Tag: External Infrared board support, crash fixes (by @RocketGod-git), RFID support for ammo reload, thread leak fix (by @jamisonderek)
  - ESP Flasher: Update blackmagic bin with WiFi Logs (by @DrZlo13)
  - Picopass: File loading improvements and fixes (by @bettse), force ISO15693 1OutOf4 mode (by @aaronjamt)
  - Quac!: External IR board support (by @daniilty), import all IR from file, iButton support, code improvements (by @rdefeo)
  - DTMF Dolphin: Add EAS tone support (by @JendrBendr)
  - NFC Playlist: Error screens for playlist already exists and item already in playlist, general improvements (by @acegoal07)
  - CLI-GUI Bridge: Fixes and improvements (by @ranchordo)
  - Seader: Enable T=1 (by @bettse)
  - UL: Sub-GHz Bruteforcer: Add new protocols for existing dump option (by @xMasterX), use FW functions for top buttons (by @DerSkythe)
  - UL: NRF24 Apps: Use string library compatible with OFW SDK (by @xMasterX)
  - OFW: SPI Mem Manager: Fixed UI rendering bug related to line breaks (by @portasynthinca3)
- CLI: Print plugin name on load fail (by @Willy-JL)
- NFC:
  - Added 6 new Mifare Classic keys from Bulgaria Hotel (#216 by @z3r0l1nk)
  - OFW: Rename 'Detect Reader' to 'Extract MF Keys' (by @bettse)
- Sub-GHz:
  - UL: Frequency analyzer fixes and improvements (by @xMasterX):
    - Enforce int module (like in OFW) usage due to lack of required hardware on external boards (PathIsolate (+rf switch for multiple paths)) and incorrect usage and/or understanding the purpose of frequency analyzer app by users, it should be used only to get frequency of the remote placed around 1-10cm around flipper's left corner
    - Fix possible GSM mobile towers signal interference by limiting upper frequency to 920mhz max
    - Fix duplicated frequency lists and use user config for nearest frequency selector too
- Infrared:
  - OFW: IR button operation fails now shows more informative messages (by @RebornedBrain)
  - OFW: Add Airwell AW-HKD012-N91 to univeral AC remote (by @valeraOlexienko)
  - OFW: Add TCL 75S451 to TV universal remote (by @christhetech131)
- OFW: GUI: Change dialog_ex text ownership model (by @skotopes)
- OFW: CCID: App changes and improvements (by @kidbomb)
- OFW: API: Exposed `view_dispatcher_get_event_loop` (by @CookiePLMonster)
- Furi:
  - UL: Extra checks for OTG power enable/disable (by @xMasterX)
  - OFW: Replace all calls to strncpy with strlcpy, use strdup more, expose strlcat (by @CookiePLMonster)
  - OFW: Threading, Timers improvements (by @CookiePLMonster)
  - OFW: FuriTimer uses an event instead of a volatile bool to wait for deletion (by @CookiePLMonster)

### Fixed:
- RFID:
  - OFW: Fix detection of GProx II cards and false detection of other cards (by @Astrrra)
  - OFW: Fix Guard GProxII False Positive and 36-bit Parsing (by @zinongli)
  - OFW: GProxII Fix Writing and Rendering Conflict (by @zinongli)
- Desktop:
  - Fallback Poweroff prompt when power settings is unavailable (by @Willy-JL)
  - OFW: Autolock fixes (by @portasynthinca3)
- Storage:
  - Fallback SD format prompt when storage settings is unavailable (by @Willy-JL)
  - OFW: Fix folder rename fails (by @portasynthinca3)
- About: Fix BLE stack version string (by @Willy-JL)
- OFW: Loader: Warn about missing SD card for main apps (by @Willy-JL)
- NFC:
  - OFW: Fix crash on Ultralight unlock (by @Astrrra)
  - OFW: FeliCa anti-collision fix (by @RebornedBrain)
- OFW: RPC: Broken file interaction fixes (by @RebornedBrain)
- OFW: GPIO: Fix USB-UART bridge exit screen stopping the bridge prematurely (by @portasynthinca3)
- OFW: GUI: Fix dialog_ex NULL ptr crash (by @Willy-JL)
- OFW: Furi: Clean up of LFS traces (by @hedger)
- OFW: Debug: Use proper hook for handle_exit in flipperapps (by @skotopes)
- OFW: API: Fix kerel typo in documentation (by @EntranceJew)