Name collision fixed
Day 19 missing input file...
Removed export of non existing function
Small code cleanups in days 18 and 15
Merge branch 'master' of git.sr.ht:~ttt/aoc18
incorrect type annotations removed
Added improved macro in day 16
Implemented instructions in day 16 with macro
Removed emtpy test from day 15
Removed tests for deleted inputs in day15.
Small optimizations