Refactor.
Add grammar loader program.
Fix typos.
Bug fix.
More bugfixes and rename.
gr_load.pl and load.pl now use hidden files to save last section.
Add some more grammar.
Change data structure, add feature to log results.
Add .gitignore.
delete file.
delete files.
remove duplicates.
more fixes.
Fixes.
More fixes.
move script.
Added a word.
bug fix.
Add grammar lookup mode.
Rename rules as lessons, add lesson