MFL v0.99.0

What's Changed

• docs(#186): add bytes type and builtins to LANGUAGE.md + runnable example by @javimosch in #295
• docs(#187): add crypto (bytes) builtins to LANGUAGE.md + runnable example by @javimosch in #296
• feat: machin test [--json] <src...> — native MFL test runner (#236 Stage A) by @javimosch in #297
• docs(#181): add url_encode/url_decode to LANGUAGE.md + runnable example by @javimosch in #298
• fix(#182): add HTTP client builtin example and docs by @javimosch in #299
• fix(#168): add base64_encode/base64_decode to LANGUAGE.md + runnable example by @javimosch in #300
• fix(#169): add sha256/hmac_sha256 to LANGUAGE.md + runnable example by @javimosch in #301
• fix(#170): add sqlite_open/exec/query/close to LANGUAGE.md + list example by @javimosch in #302
• fix: reject duplicate function definitions (last-wins was silent) by @javimosch in #303

Full Changelog: v0.98.0...v0.99.0