v3.2.1

What's Changed

• chore(shard.yml): raise crystal floor to >= 1.2.0 by @n-rodriguez in #64
• perf(bit_fields): memoize merged map; document children re-parse by @n-rodriguez in #65
• fix: type two defensive raises (last untyped errors) by @n-rodriguez in #66
• test: cover runnable README ASN.1 examples; fix a broken snippet by @n-rodriguez in #67

Full Changelog: v3.2.0...v3.2.1