• Introduce ResourceDef::join. #380
• Disallow prefix routes with tail segments. #379
• Enforce path separators on dynamic prefixes. #378
• Improve malformed path error message. #384
• Prefix segments now always end with with a segment delimiter or end-of-input. #2355
• Prefix segments with trailing slashes define a trailing empty segment. #2355
• Support multi-pattern prefixes and joins. #2356
• ResourceDef::pattern now returns the first pattern in multi-pattern resources. #2356
• Support build_resource_path on multi-pattern resources. #2356
• Minimum supported Rust version (MSRV) is now 1.51.