SwirEngine 1.3.0

What's Changed

• feat(renderer): GPU instancing and frustum culling for SwirEngine 1.3 by @Swir in #64
• feat(animation): glTF skeletal animation and GPU skinning for SwirEngine 1.3 by @Swir in #65
• feat(physics): 3D collision and fixed-step gameplay foundation for SwirEngine 1.3 by @Swir in #66
• feat(navigation): deterministic grid pathfinding and agents for SwirEngine 1.3 by @Swir in #67
• feat(world): large-world chunk streaming for SwirEngine 1.3 by @Swir in #68
• feat(shader): advanced material and shader variant pipeline for 1.3 by @Swir in #69
• perf(2d): viewport-cull tilemaps and reuse sprite staging for 1.3 by @Swir in #70
• feat(gameplay): deterministic timers signals pools and spawners for 1.3 by @Swir in #71
• feat(editor): expose SwirEngine 1.3 systems through existing creator workflow by @Swir in #72
• release(1.3): integrated full game and final hardening gate by @Swir in #73

Full Changelog: v1.2.0...v1.3.0