Test build 24: 2.5-b24 — SLOOP 2.5 under the fork's additions

SLOOP 2.5 under the fork's additions. Everything of upstream 2.5 — the PHYS and NOISE engines, 153 sounds, the drum synth with your own SYN1–SYN4 kits, the drums' delay send (GLO → DRUMS → DLY), USB audio at 48 kHz, the MIDI CC map, the editor's piano roll, MIDI files and Song page, swing shown 0–100, SEL as printed on the button — plus the twelve DX7 banks by name, the jump by kind and FX → KEEP, as on build 23.

• FX → KEEP → RESET also sets the drums' new delay send back.
• The DX7 banks are backup objects 100–111 now: 2.5 uses 9 for its drum kits. Backups made on builds 14–23 restore here, and the editor still restores into those builds.
• A .syx bank file may hold fewer than 32 voices: a slot of zeros, or the INIT VOICE that Export writes for an empty slot, loads as an empty slot.

Safe over builds 19–23: nothing is erased, the twelve banks stay. Going to plain upstream and back can erase banks 1–8 — save a backup in the editor first. Not a SLOOP release.