v1.5.2

• v1.5.0 was meant to 2x indexing performance, which it does on macOS and Windows. On Linux, with the published musl build, it actually halves the indexing performance. This release subs in jemalloc on Linux musl builds to fix the musl allocator thrashing, and performance now achieves the 2x v1.4.0 claim.
• Further improved deterministic index filenames between indexes (PR #1104 — thanks @gissimo !).
• Cleaned up a wasm-bindgen deprecation warning popping up in the browser console.