Version 1.8.0

Version 1.8.0 includes a new logging environment, macros for simplified
argument parsing, enhancements for the CMake build
system, static and shared libraries, improved packaging, and increased test
coverage.

• logging: introduced embedded logging functionality
  • supports global and custom logs with minimal computational overhead
  • selectable level at run-time to increase/decrease verbosity as needed
  • support for logging to files
  • color output for enhanced visibility (optionally disabled)
  • compile time configurations for enhanced customization
• autotest
  • refactored testing infrastructure to include test-specific metadata,
    estimated 'cost' (execution time), description, and keywords
  • overhauled all tests to use new harness; tests now thread-safe and
    statically defined
  • increased testing: 1,300+ tests, 716,000+ checks, covering 82% of entire
    project
• build
  • performed a static memory analysis test to substantially reduce memory
    used on the stack in favor of dynamically allocating it on the stack;
    improves stability for multi-threaded processing
  • introduced new argument parsing header to simplify creating variables,
    parsing command-line options, printing help, and validating results;
    refactored examples and removed over 2,000 lines of redundant code.
  • added CMake rules to create exportable interface, option for building
    shared vs. static library, and simplified directory inclusion
    (thanks @burnbot-alt)
  • fixed annoying deprecation warnings (thanks @AHSauge and @oe1rsa)
  • added generated pkg-config file
  • added support for building either/both static and shared libraries
    (thanks @noonafter)
  • adding separate option to find SIMD vs. use it with explicit options
  • cleaned up descriptions for most interfaces in header file
  • removed gentab (generated tables) from build environment; added
    pre-generated source to version control
  • fixed cmake x86 SIMD detection (thanks @stefantalpalaru)
  • fixed many typos via codespell (thanks @luzpaz)
• core
  • new module to include core functionality to liquid-dsp including logging
    and error-handling
  • error-handling macros moved to global header to allow global use
• fft
  • asgram: adding option for auto-scaling output
• filter
  • rresamp: fixed aliasing issue with default operation (thanks @xerpi
    and @MatiasLopezING)
  • symsync: added methods to explicitly get/set rate and del values
    (thanks @brian-armstrong)
  • firdespm: devising halfband filter design with desired stop band
  • firfilt: fix recreate() storing coefficients in reverse order
    (thanks @deekshaNVIDIA)
• framing
  • fskframe: refactored object to allow for dynamically-sized payload, but
    removed ability to specify CRC and FEC for now
  • added ability to initialize qdsync on cpfsk (thanks @asazernik)
  • framesync64: adding option to set detection range
  • qdetector: improved reliability, speed, interface
• vector
  • added more SIMD methods for AVX, NEON extensions
  • added more benchmarks to identify areas for speed improvement