v2.0.0 - Zig 0.15.1 update

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog,
and this project adheres to Semantic Versioning.

[2.0.0] - 2025-10-09

🚀 Compatibility & Tooling

Build System

• Reworked build.zig for Zig 0.15+: executables/tests/benchmarks now share helper-generated modules, and
  the static archive installs via b.addLibrary.
• Exported module name stays stable for dependents (@import("ohlcv")), removing the old lib/ohlcv.zig
  path requirement.
• zig build run, zig build test, and benchmark steps (zig build benchmark, zig build benchmark-streaming, etc.) stay available through new helper wiring.

HTTP & IO Updates

• HTTP data source now streams into a managed ArrayList writer adapted with writer.adaptToNewApi(...),
  passing the new response_writer on Zig 0.15’s std.http.Client.fetch.
• Demo stdout uses std.fs.File.stdout().writer(...) and guards against std.Io.Writer.Error.WriteFailed
  (common when piping output).

🧠 Library Improvements

Parsers & Time Series

• CSV parser, streaming parser, and time-series utilities now rely on std.array_list.Managed, preserving
  .init, .writer, and capacity helpers under Zig 0.15.
• Benchmarks allocate via the managed lists, matching parser semantics for non-streaming and streaming
  runs.

Consumer Experience

• README now highlights Zig 0.15+ support, with import instructions showing const ohlcv = @import("ohlcv");.
• Build instructions clarify dependency wiring:

  const ohlcv_dep = b.dependency("ohlcv", .{ .target = target, .optimize = optimize });
  exe.root_module.addImport("ohlcv", ohlcv_dep.module("ohlcv"));
  

✅ Verification

• Commands executed on macOS arm64 with Zig 0.15.1:
  • zig build
  • zig build test
  • zig build benchmark, zig build benchmark-streaming, zig build benchmark-performance
  • zig build profile-memory
• Downstream sample (rayzig) compiles once imports switch to @import("ohlcv") and zig fetch --save …
  refreshes the dependency.

Known Limitations

• Requires Zig 0.15.0 or higher.
• CSV dates before 1970 are skipped.
• Rows with zero values are filtered out.