store glyph images as brightness, not darkness #10
first, ugly version to brightness algo - refactoring is coming #10
- better names for gray level description
- usage of std::min_element and std::max_element instead of manual vocabulary iteration #10
- new shiny and crashing multithread logic #10
seg fault but fixed #10
refactoring #10
readability #10
refactoring #10
refactoring #10