changed the offers and requests to be only a list of string attributes
checking for exact equality of items and returning only a list of buyers and sellers
changed test offer to consist of a list and a price and printing info when buyers are founds
reworked matchmaker to use the itemDB
minor refactoring plus adaption of item parsing to expect only a concatenated list of strings
changed item descriptor to consist only of a list of strings instead of key-value pairs
extended environment to respond to getting if buyers and sellers requests
Merge branch 'master' of github.com:robert-schmidtke/map

Conflicts:
	exercise-3/trader.asl