create diffs between HTTP requests

Changes for 0.02 - 2024-03-24

• Check query parameter separator for identity in strict mode
• Warn on newline-separated headers in input
• Try harder to convert input objects into request strings
• Properly load prerequisite modules instead of relying on implicit loading of HTTP::Parser
• Output using Term::Table - Term::Table::Any does not handle newlines in value
• Ignore Content-Length: 0 header in semantic mode
• Handle %20 vs + in URL-encoded elements
• Fix differently-sized multi-part form data due to different boundary strings (semantic , lax modes)
• Allow lower-case header names