update copyright date 2006->2007 darcs-hash:20070527203458-5007d-80f992bc5501d433301d462f9d4b0f5f8403b7a1.gz
copyright notices/updates darcs-hash:20060723064753-5007d-e1917a77b2f86898c05160d112fe2ab0a7af12b2.gz
checkpoint darcs-hash:20060104071705-5007d-ec8270ebcc902b2364afb0ef91ebb8bf71ff6253.gz
refactored Topology to make it a value (immutable) class darcs-hash:20060102062808-5007d-b2bc0b6e025f75803c863795a62a65c316c6c155.gz
good patch darcs-hash:20060102015922-5007d-8e200889e132bcf7ad9b3b6c19039e9afed8d691.gz
initial import darcs-hash:20051212072316-5007d-b2da724d7a4090bc581c289fdec49c2a295abbdc.gz