* Bugfix/odr violations (#47)
* Make common non-member functions inline, remove unreachable line from get_line_buffer
* [skip ci] Fix namespace comments
* Resolve clang-tidy warnings (#48)
* Resolve clang-tidy warnings, update single_header_generator.py
* Update single header test, resolve additional clang-tidy warnings
* Add header and raw_header methods, update header usage methods error handling, write new and update existing unit tests
* Update parser error messages, fix parser tests
* Add [[nodiscard]] where fitting, update unit tests (#49)
* Add const where fitting, make splitter class members private, add #pragma once to ssp.hpp
* Modify header parsing for empty headers, update old and add new tests for header parsing
* Enable the parser to accept a header with one empty field, update unit tests
* Fix test CMakeLists.txt typo
