v0.2.0-alpha.3

What's Changed

• Fix Ci comment repetition by @FrancoGiachetta in #830
• Fix array_get's drop implementation. by @azteca1998 in #832
• Update to 2.8.4, add release docs, version alpha.3 by @edg-l in #835
• Add is_infinity field to secp256 point struct by @edg-l in #828
• fix storage's values truncations by @FrancoGiachetta in #839
• Add malloc tracing and fix more memory leaks. by @azteca1998 in #833
• Builtin costs rework by @edg-l in #837

Full Changelog: v0.2.0-alpha.2...v0.2.0-alpha.3