[Unreleased]

Added

String Operations:
- count(str, substr): Count non-overlapping occurrences of substring
- count(str, ch): Count occurrences of character (constexpr)
- countOverlapping() function for counting overlapping substring occurrences
- replace() function for replacing first occurrence of substring
- replaceAll() function for replacing all non-overlapping occurrences of substring
- join() function with two overloads for joining string elements
- join(container, delimiter): Join container elements with delimiter
- join(begin, end, delimiter): Join iterator range with delimiter
- reverse(str): Reverse string characters
- indexOf(str, substr): Find first occurrence of substring
- lastIndexOf(str, substr): Find last occurrence of substring
String Formatting & Padding:
- padLeft(str, width, fillChar): Pad string on left (right-align)
- padRight(str, width, fillChar): Pad string on right (left-align)
- center(str, width, fillChar): Center string within width
- repeat(str, count): Repeat string N times
Parsing: tryParseFloat function for single-precision floating-point parsing
- Supports decimal, scientific notation, and special values (nan, inf, infinity)
Documentation:
- Updated Sample_StringUtils.cpp
- Added real-world use cases: DNA analysis, log parsing, CSV generation, financial reports
- Added examples: URL parsing, file path handling, email parsing, palindrome detection
- Added visual examples: progress bars, text boxes, table formatting

Code Consistency: Unified implementation style between tryParseFloat and tryParseDouble to use consistent variable naming and pointer calculation pattern
- Both now use std::next() for pointer arithmetic
- Consistent structured binding usage for std::from_chars results

String Splitter: Zero-allocation string splitting with C++20 iterator support
- Splitter class for memory-efficient string splitting using std::string_view
- splitView() factory function for convenient usage
- Full C++20 forward iterator implementation with proper iterator traits
- STL algorithm compatibility (std::distance, std::find, std::count, etc.)
- Range-based for loop support for ergonomic iteration
- Zero-copy design - segments reference original string memory without allocation

Removed unused variable lastColonPos in isIPv6Address function to eliminate dead code

Refactored directory variable naming from NFX_STRINGUTILS_ROOT_DIR to NFX_STRINGUTILS_DIR for consistency

Fixed incorrect CMake directory paths that would cause build failures in certain configurations: CMAKE_CURRENT_SOURCE_DIR was incorrectly used instead of PROJECT_SOURCE_DIR for root directory path

Fixed release workflow to create draft releases and avoid immutable release restrictions

String Utilities: Common string manipulation functions
- Case conversion
- Whitespace trimming
- String testing
- All functions use std::string_view for zero-copy operations where possible
- constexpr implementations for compile-time evaluation
Network & URI Validation: RFC-compliant validation functions
- IPv4 Validation (RFC 791)
- IPv6 Validation (RFC 4291/5952)
- Hostname Validation (RFC 1123)
- Domain Name Validation (RFC 1035)
- Port Validation (RFC 6335)
- URI Character Classification (RFC 3986)
- Endpoint Parsing
Build System
- CMake 3.20+ configuration with modular structure
- Header-only interface library target
- Cross-platform support (Linux GCC/Clang, Windows MinGW/Clang/MSVC)
- Google Test integration for unit testing
- Google Benchmark integration for performance benchmarking
- Doxygen documentation generation with GitHub Pages deployment
- CPack packaging for distribution (DEB, RPM, TGZ, ZIP, WiX MSI)
- Installation support with CMake package config files
Documentation
- README with feature overview and usage examples
- Detailed API documentation with Doxygen comments and RFC references
- Sample applications
- Build and installation instructions
Testing & Benchmarking
- Unit test suite
- Performance benchmarks for all operations
- Cross-compiler performance validation