Version 1.x feature plan

[surol]

• Custom schema processor context #55
• Metadata support #52
• application/x-www-form-urlencoded deserializer #63
• application/x-www-form-urlencoded serializer #65
• URI deserializer
• Binary data support
• multipart/form-data deserializer
• multipart/form-data serializer
• JSON deserializer #68
• JSON serializer #72
• One-of schema for union types
• Automate combining schemae within one-of
• WebAssembly lexers
• Documentation site
• Benchmarks