jpka-

- Fixed #1478. - Added Stereo panning, and also Front-Rear balance for 3-ch (like Stereo+Bass) and 4-ch plugins, along with classic L, R knobs. [current-full-patch.zip](https://github.com/user-attachments/files/19133569/current-full-patch.zip)

- Tube theme added. - Scalable knobs for XY Controller. (But note: #1979 ) **NOTE:** 3rd patch applies _after_ compile (else no file exist yet). See `changelog`. [current-full-patches.zip](https://github.com/user-attachments/files/19183459/current-full-patches.zip)

- More enhancements for XY Controller. (Not interferes with classic behavior). - Fix #1979. See _changelog._ [current-patch.zip](https://github.com/user-attachments/files/19247496/current-patch.zip)

Menu enhanced. Icons added. Quick-**Reload** toolbar button added (hidden, enabled by tweak). #312 semi-fixed. Other small fixes. See _changelog._ [current-full-patch-svg.zip](https://github.com/user-attachments/files/19291521/current-full-patch-svg.zip)

- New **Xray** tab for **Edit dialog**. - XY Controller fix (my own bug). [current-patch-set.zip](https://github.com/user-attachments/files/19408530/current-patch-set.zip)

Qt6 stuff added. Canvas openGL not works w/Qt6 yet, but not throw **TypeError** now. Tested parameter grouping. Example of `vitalium.ttl` is at #1473. See _changelog_ how to compile for Qt6....

- Added **pointer-style** (chickenhead) **knob** for integer selectors (for tube skin yet). Ideas how it should look for other skins, are welcome. - Added tweak for set knobs **travel in...

Small fix of my own regression (to be applied over previous https://github.com/falkTX/Carla/pull/1971#issuecomment-2761970770) [tiny-fix.zip](https://github.com/user-attachments/files/19862160/tiny-fix.zip)

I've add further changes, not sure if it was done correctly within this pull, or should they be separated. There is also extra dependency of '**libgig**' now required, i provide...

Related: #156