[Copilot]

Case helpers retained inconsistent casing, dropped non-ASCII letters, and produced dangling separators.

• Word conversion: Normalize casing and share boundary rules across camel, kebab, and snake case.
• Unicode: Preserve Unicode letters, numbers, and combining marks, with an approximate fallback for older engines.
• Capitalization: Preserve separators and document that existing camel-case boundaries are lowercased.
• Compatibility: Document output changes in the changelog.

strCamelCase("café crème");       // "caféCrème"
strKebabCase("XMLHttpRequest");   // "xml-http-request"
strSnakeCase("__hello_world__");  // "hello_world"

• Fixes [Bug] Case helpers (strCamelCase, strKebabCase, strSnakeCase, strCapitalizeWords): case not normalised, inconsistent word boundaries, non-ASCII letters dropped #634

[nev21]

@copilot I want this to occur as a single pass and not create a words array and then process that array

[Copilot]

Updated to convert and append each word during the boundary scan, without an intermediate array, in 67a8f3d.