OCaml implementation of operations in Program Algebra

Taddeus Kroes 739a8a8924 Added some empty commands 11 lat temu
.gitignore 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu
Makefile 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu
lexer.mll 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu
parse.ml 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu
parser.mly 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu
pga.ml 739a8a8924 Added some empty commands 11 lat temu
stringify.ml 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu
types.ml 682819d4a2 Transformed parser into lex+yacc parser 11 lat temu