chore: bump midi2 dependency to v0.3.4 across all install paths

midi2 v0.3.4 ships the ESP-IDF Component Manager fix; consumers no
longer need the manual `cp -r dist/` workaround when the dependency
is fetched via git URL.

Bumps 26 references across:

- library.properties: depends=midi2 (>=0.3.4)
- library.json: dependencies."sauloverissimo/midi2": "^0.3.4"
- README.md badge + install snippets
- CHANGELOG.md cross-references
- 8 Pico SDK + 2 TinyUSB CMake recipes: FetchContent GIT_TAG v0.3.4
- 7 ESP-IDF recipes: idf_component.yml git version v0.3.4
- 3 PlatformIO recipes: lib_deps midi2 @ ^0.3.4
- .github/workflows/ci.yml: arduino-cli git URL fallback v0.3.4
- root CMakeLists.txt: find_package + FetchContent v0.3.4

Verified locally end to end:
- Host suite (cmake + ctest 7/7 pass)
- esp32-s3-devkitc-usb-midi2 reconfigure + build with v0.3.4 from
  GitHub Component Manager (no local path workaround)

Author: sauloverissimo

.github/workflows/ci.yml

@@ -125,7 +125,7 @@ jobs:
           ln -s "$GITHUB_WORKSPACE" ~/Arduino/libraries/midi2cpp
 
       - name: Install midi2 dependency from Library Manager
-        # midi2cpp depends on midi2 (>=0.3.3) but arduino-cli does not
+        # midi2cpp depends on midi2 (>=0.3.4) but arduino-cli does not
         # walk depends= entries automatically. Install it explicitly.
         # Falls back to the GitHub git URL if the registry index has
         # not propagated yet (Library Manager indexes within 24h of a
@@ -134,7 +134,7 @@ jobs:
           arduino-cli lib update-index
           arduino-cli lib install midi2 || \
             (arduino-cli config set library.enable_unsafe_install true && \
-             arduino-cli lib install --git-url https://github.com/sauloverissimo/midi2.git#v0.3.3)
+             arduino-cli lib install --git-url https://github.com/sauloverissimo/midi2.git#v0.3.4)
 
       - name: Compile Arduino sketches (skip non-sketch dirs)
         run: |

CHANGELOG.md

@@ -24,14 +24,14 @@ patterns shipped under `examples/`.
 
 - **Vendored `src/midi2.{h,c}` removed.** midi2cpp now declares
   midi2 as an external dependency:
-  - `library.properties` carries `depends=midi2 (>=0.3.3)`. Arduino
+  - `library.properties` carries `depends=midi2 (>=0.3.4)`. Arduino
     Library Manager auto-installs midi2 when a sketch includes
     midi2cpp.
   - `library.json` carries `dependencies."sauloverissimo/midi2":
-    "^0.3.3"`. PlatformIO resolves midi2 from its registry.
+    "^0.3.4"`. PlatformIO resolves midi2 from its registry.
   - The root `CMakeLists.txt` exposes a three-layer fallback at the
-    top (`if(NOT TARGET midi2)` -> `find_package(midi2 0.3.3 CONFIG)`
-    -> `FetchContent_Declare(midi2 GIT_TAG v0.3.3)`), then links
+    top (`if(NOT TARGET midi2)` -> `find_package(midi2 0.3.4 CONFIG)`
+    -> `FetchContent_Declare(midi2 GIT_TAG v0.3.4)`), then links
     midi2cpp `PUBLIC midi2::midi2` so downstream targets see the
     C99 core transitively.
 
@@ -81,10 +81,10 @@ patterns shipped under `examples/`.
 
 | Build system | Mechanism | Recipes |
 |---|---|---|
-| Pico SDK | `FetchContent_Declare(midi2 GIT_TAG v0.3.3)` plus `target_link_libraries(midi2cpp PUBLIC midi2::midi2)` | `rp2040-midi2`, `waveshare-rp2040-midi2`, `sparkfun-promicro-rp2350-midi2`, `waveshare-rp2350-usb-a-midi2`, `waveshare-rp2350-usb-a-bridge-midi2`, `adafruit-feather-rp2040-host-midi2`, `adafruit-feather-rp2040-bridge-midi2`, `rp2040-promicro-ump-test-bench` |
+| Pico SDK | `FetchContent_Declare(midi2 GIT_TAG v0.3.4)` plus `target_link_libraries(midi2cpp PUBLIC midi2::midi2)` | `rp2040-midi2`, `waveshare-rp2040-midi2`, `sparkfun-promicro-rp2350-midi2`, `waveshare-rp2350-usb-a-midi2`, `waveshare-rp2350-usb-a-bridge-midi2`, `adafruit-feather-rp2040-host-midi2`, `adafruit-feather-rp2040-bridge-midi2`, `rp2040-promicro-ump-test-bench` |
 | TinyUSB native CMake | same FetchContent pattern as Pico SDK | `xiao-samd21-midi2`, `nrf52840-promicro-midi2` |
-| ESP-IDF | `idf_component.yml` declares `midi2: { git: ..., version: ">=0.3.3" }` and `idf_component_register` lists `midi2` in `REQUIRES` | `arduino-nano-esp32-midi2`, `esp32-s3-devkitc-usb-midi2`, `esp32-p4-devkit-usb-midi2`, `esp32-p4-devkit-host-midi2`, `esp32-p4-devkit-bridge-midi2`, `esp32-p4-devkit-bridge2-midi2`, `t-display-s3-midi2` |
-| PlatformIO + ESP32_Host_MIDI | `lib_deps += sauloverissimo/midi2 @ ^0.3.3` | `esp32-c6-devkitc-multi-midi2`, `esp32-s3-devkitc-host-midi2`, `t-display-s3-shield-host-midi2` |
+| ESP-IDF | `idf_component.yml` declares `midi2: { git: ..., version: ">=0.3.4" }` and `idf_component_register` lists `midi2` in `REQUIRES` | `arduino-nano-esp32-midi2`, `esp32-s3-devkitc-usb-midi2`, `esp32-p4-devkit-usb-midi2`, `esp32-p4-devkit-host-midi2`, `esp32-p4-devkit-bridge-midi2`, `esp32-p4-devkit-bridge2-midi2`, `t-display-s3-midi2` |
+| PlatformIO + ESP32_Host_MIDI | `lib_deps += sauloverissimo/midi2 @ ^0.3.4` | `esp32-c6-devkitc-multi-midi2`, `esp32-s3-devkitc-host-midi2`, `t-display-s3-shield-host-midi2` |
 
 Each recipe drops the `${MIDI2CPP_ROOT}/src/midi2.c` (or `midi2_c99`
 helper library) from its source list. Other midi2cpp sources

CMakeLists.txt

@@ -13,12 +13,12 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 # This is the same pattern the midi2 README documents for downstream
 # consumers, applied to midi2cpp itself.
 if(NOT TARGET midi2)
-    find_package(midi2 0.3.3 QUIET CONFIG)
+    find_package(midi2 0.3.4 QUIET CONFIG)
     if(NOT midi2_FOUND)
         include(FetchContent)
         FetchContent_Declare(midi2
             GIT_REPOSITORY https://github.com/sauloverissimo/midi2.git
-            GIT_TAG        v0.3.3
+            GIT_TAG        v0.3.4
         )
         FetchContent_MakeAvailable(midi2)
     endif()

README.md

@@ -9,7 +9,7 @@
 [![release](https://img.shields.io/github/v/release/sauloverissimo/midi2cpp.svg)](https://github.com/sauloverissimo/midi2cpp/releases/latest)
 [![C++17](https://img.shields.io/badge/C%2B%2B-17-00599C.svg)](https://en.cppreference.com/cpp/compiler_support)
 [![MIDI 2.0](https://img.shields.io/badge/MIDI-2.0-blueviolet.svg)](https://midi.org/specifications/midi-2-0-specifications)
-[![depends: midi2](https://img.shields.io/badge/depends-midi2_%E2%89%A5_0.3.3-blueviolet.svg)](https://github.com/sauloverissimo/midi2)
+[![depends: midi2](https://img.shields.io/badge/depends-midi2_%E2%89%A5_0.3.4-blueviolet.svg)](https://github.com/sauloverissimo/midi2)
 [![Arduino](https://img.shields.io/badge/Arduino-IDE-00979D.svg)](https://www.arduino.cc/)
 [![PlatformIO](https://img.shields.io/badge/PlatformIO-Registry-FF7F00.svg)](https://registry.platformio.org/libraries/sauloverissimo/midi2cpp)
 [![ESP-IDF](https://img.shields.io/badge/ESP--IDF-v5.4-E7352C.svg)](https://docs.espressif.com/projects/esp-idf/en/stable/)
@@ -57,10 +57,10 @@ Underneath, [midi2](https://github.com/sauloverissimo/midi2) (the portable C99 c
 midi2cpp draws a clear line between what the library declares and what stays the caller's job:
 
 - **Exactly one declared dependency: [midi2](https://github.com/sauloverissimo/midi2).** The C99 core lives in its own repo, is versioned independently, and is resolved by whichever package manager fits the host build:
-  - Arduino Library Manager: `depends=midi2 (>=0.3.3)` in `library.properties`.
-  - PlatformIO Registry: `dependencies."sauloverissimo/midi2": "^0.3.3"` in `library.json`.
+  - Arduino Library Manager: `depends=midi2 (>=0.3.4)` in `library.properties`.
+  - PlatformIO Registry: `dependencies."sauloverissimo/midi2": "^0.3.4"` in `library.json`.
   - ESP-IDF Component Manager: `idf_component.yml` declaration plus `midi2` in `REQUIRES`.
-  - CMake: `find_package(midi2 0.3.3 CONFIG)` first, falls back to `FetchContent_Declare(midi2 GIT_TAG v0.3.3)`.
+  - CMake: `find_package(midi2 0.3.4 CONFIG)` first, falls back to `FetchContent_Declare(midi2 GIT_TAG v0.3.4)`.
 - **No submodules.** `git clone` is the install. No `--recurse-submodules`, no half-initialised state.
 - **No transport library pulled in.** TinyUSB, Teensy native USB, PIO-USB, libDaisy USBMidi: all caller-supplied. The library does not include `<Arduino.h>`, `pico/time.h`, `esp_timer.h`, or any USB header.
 - **No clock or RNG dependency.** Caller injects `millis` / `time_us_64` / `esp_timer_get_time` and `random` / `get_rand_32` / `esp_random` through public hooks. Unset hooks degrade silently, no missing-symbol link errors.
@@ -242,7 +242,7 @@ dependencies:
   idf: ">=5.4"
   midi2:
     git: https://github.com/sauloverissimo/midi2.git
-    version: ">=0.3.3"
+    version: ">=0.3.4"
 ```
 
 `main/CMakeLists.txt` lists `midi2` (and any of `midi2cpp`'s wrapper sources you use) in its `idf_component_register(...)` block. The seven ESP-IDF recipes under [`examples/`](examples/) ship working templates for device, host and bridge roles.
@@ -259,7 +259,7 @@ FetchContent_Declare(
 FetchContent_MakeAvailable(midi2cpp)
 ```
 
-`midi2cpp` cascades the dependency on `midi2` to the parent project: `find_package(midi2 0.3.3 CONFIG)` is tried first, falling back to `FetchContent_Declare(midi2 GIT_TAG v0.3.3)` if no install is found.
+`midi2cpp` cascades the dependency on `midi2` to the parent project: `find_package(midi2 0.3.4 CONFIG)` is tried first, falling back to `FetchContent_Declare(midi2 GIT_TAG v0.3.4)` if no install is found.
 
 ### Git submodule
 

examples/adafruit-feather-rp2040-bridge-midi2/CMakeLists.txt

@@ -82,7 +82,7 @@ if(NOT TARGET midi2)
     else()
         FetchContent_Declare(midi2
             GIT_REPOSITORY https://github.com/sauloverissimo/midi2.git
-            GIT_TAG        v0.3.3
+            GIT_TAG        v0.3.4
             GIT_SHALLOW    TRUE
         )
     endif()

examples/adafruit-feather-rp2040-host-midi2/CMakeLists.txt

@@ -89,7 +89,7 @@ if(NOT TARGET midi2)
     else()
         FetchContent_Declare(midi2
             GIT_REPOSITORY https://github.com/sauloverissimo/midi2.git
-            GIT_TAG        v0.3.3
+            GIT_TAG        v0.3.4
             GIT_SHALLOW    TRUE
         )
     endif()

examples/arduino-nano-esp32-midi2/idf/main/idf_component.yml

@@ -7,4 +7,4 @@ dependencies:
   idf: ">=5.4"
   midi2:
     git: https://github.com/sauloverissimo/midi2.git
-    version: "v0.3.3"
+    version: "v0.3.4"

examples/esp32-c6-devkitc-multi-midi2/pio/platformio.ini

@@ -53,7 +53,7 @@ build_flags =
 lib_extra_dirs = ../../..
 
 lib_deps =
-    sauloverissimo/midi2 @ ^0.3.3
+    sauloverissimo/midi2 @ ^0.3.4
     https://github.com/sauloverissimo/ESP32_Host_MIDI.git#v6.0.1
 
 ; Pre-build patch: ESP32_Host_MIDI v6.0.0 ships USB Host transport sources

examples/esp32-p4-devkit-bridge-midi2/idf/main/idf_component.yml

@@ -7,4 +7,4 @@ dependencies:
   idf: ">=5.4"
   midi2:
     git: https://github.com/sauloverissimo/midi2.git
-    version: "v0.3.3"
+    version: "v0.3.4"

examples/esp32-p4-devkit-bridge2-midi2/idf/main/idf_component.yml

@@ -7,4 +7,4 @@ dependencies:
   idf: ">=5.4"
   midi2:
     git: https://github.com/sauloverissimo/midi2.git
-    version: "v0.3.3"
+    version: "v0.3.4"