Version 0.8.0

Added:

• Added support for resolving symbols from elf and mach-o symbol tables, allowing function names to be resolved even in
  a build that doesn't include debug information #201
• Added a configurable stack trace formatter #164
• Added configuration options for the libdwarf back-end that can be used to lower memory usage on memory-constrained
  systems #193
• Added cpptrace::nullable<T>::null_value
• Made cpptrace::nullable<T> member functions conditionally constexpr where possible

Fixed:

• Fixed handling of SymInitialize when other code has already called SymInitialize. SymInitialize must only be
  called once per handle and cpptrace now attempts to duplicate the current process handle to avoid conflicts.
  #204
• Fixed a couple of locking edge cases surrounding dbghelp functions
• Fixed improper deallocation of dwarf_errmsg in the libdwarf back-end

Breaking changes:

• cpptrace::get_snippet previously included a newline at the end but it now does not. This also affects the behavior
  of trace formatting with snippets enabled.

Other:

• Significantly improved memory usage and performance of the libdwarf back-end
• Improved implementation and organization of internal utility types, such as optional and Result
• Improved trace printing and formatting implementation
• Added unit tests for library internal utilities
• Added logic to the cxxabi demangler to ensure external names begin with _Z or __Z before attempting to demangle
• Added various internal tools and abstractions to improve maintainability and clarity
• Various internal improvements for robustness
• Added a small handful of utility tool programs that are useful for continued development, maintenance, and debugging
• Improved library CI setup
• Marked the CPPTRACE_BUILD_BENCHMARK option as advanced