Added functionality to create tagmanifest file while creating new bags.
Ignored existing tagmanifest file while calculating checksums.
Added new test cases and fixed the ones which failed.
Merge branch 'create_tag_manifest_files' of github.com:gwu-libraries/bagit into create-tag-manifest-files
Fixed incorrect checksums for test cases.
Merge branch 'create_tag_manifest_files' of github.com:gwu-libraries/bagit into create-tag-manifest-files
Bagging-Date kept changing which caused the fixity of bag-info.txt to change, and tests to fail. Not it can be overridden. Added a test that it is generated when not supplied. Also updated Bag-Software-Agent to point at LC now
sort filenames and dirnames while walking so order of manifest is deterministic, and can be tested
cleaned up comment a bit
Merge branch 'create-tag-manifest-files'