relive appveyor build 1.0.4426

What's Changed

• AE bugfix: disable reverb in cutscenes (#1126) by @pryon in #1433
• wip json upgrader by @paulsapps in #1438
• fix typo in Slig_Knockback by @mouzedrift in #1439
• fix incorrect resource files for abe falling and die by @mlgthatsme in #1441
• rename editor properties and fix some swapped/wrong AO AnimIds by @mouzedrift in #1442
• fix azure windows builds by @mouzedrift in #1445
• fix AO crashing when beating up muds by @mouzedrift in #1444
• fix more AnimId mudokon crashes by @mouzedrift in #1446
• auto testing improvements, expose grid snapping funcs to the API by @paulsapps in #1447
• fix qt editor no longer building with latest relive api by @mouzedrift in #1448
• ALIVE_FATAL when no bird portal exit has been found by @mouzedrift in #1449
• add missing AO well bg anim id's by @mouzedrift in #1450
• fix custom messages in the 32bit engine build, fixes #1436 by @paulsapps in #1451
• name the data for HintFly letters by @mouzedrift in #1452
• fix max switch id check being off by 1, add check to AO by @mouzedrift in #1453
• fix some wrong field names, rename switch to lever, make some editor property names more understandable by @mouzedrift in #1455
• better WheelSyncer enum names, make CrawlingSlig and FlyingSlig anim id name formatting more consistent by @mouzedrift in #1456
• API: Read back any custom LCD/hint fly messages by @paulsapps in #1457
• json upgrader impl by @paulsapps in #1458
• rename ADD_UPGRADE_STEP -> ADD_UPGRADE_STEP_FROM, fix hintfly messages reading back wrong messages by @mouzedrift in #1459
• abstract file i/o calls in the API by @paulsapps in #1460
• Error handling improvements round 1 by @paulsapps in #1461
• allow the API to override what ALIVE_FATAL does by @paulsapps in #1462
• missing include by @paulsapps in #1463

Full Changelog: appveyor_1.0.4360...appveyor_1.0.4426