Replace the unacceptable disgrace called parsing based on spaces with new, readString() based method. Also write some tests for insertion and calling, and general code cleanup and reformatting.

Be quiet Vera!

I said be quiet Vera! And you, clang-tidy, do not even think about raising your voice!

Got an idea to pacify clang-tidy without commenting anything out, let's see if it's going to work

Revert "Got an idea to pacify clang-tidy without commenting anything out, let's see if it's going to work"

This reverts commit db9e73ad

Revert "Got an idea to pacify clang-tidy without commenting anything out, let's see if it's going to work"

This reverts commit db9e73ad9d8508e59764d7359408aac962a20afe