first commit
first commit
Merge branch 'master' of intern.chemocompile.de:hl7-parser
Added first test.
Restructured code.

	Hl7_definitions holds definitions such as field names, types and other options for segments.
Renamed Delimiters to comply with standard.
subcomponents are now also constructed using make_cell_type
Implemented unknown segment types except for sub:component level.
Finished implementing unknown segment types.
Implemented XAD extended adress data type
Implemented CWE Coded with exception data type
Implemented Message Type data type
Implemented Processing Type data type
Implemented version identifier data type
minor corrections
Renamed files to make more sense.
some cleanup and fixes
doctest and cleanup
__str__ method
whitespace