fix: extra_attributes as a set
Merge pull request #22 from satra/fix/extra_attrib

fix: extra_attributes as a set
Minor code improvements
fix persistence unit test : UnicodeEncodeError: 'ascii' codec can't encode character u'\u1ef3'
Merge pull request #23 from jdcourcol/master

fix persistence unit test : UnicodeEncodeError: 'ascii' codec can't enco...

Many thanks, @jdcourcol!
Added: Support initialising namespaces when creating a ProvBundle
Fixed: Triple quoted multi-line string literals in PROV-N
Fixed: Parsing XSD dateTime
Fixed: Refactor the flattening code
Improved the management of QName
fix: resolve conflicts
fix: use multiline only when input is a string
fix: use multiline only when input is a string
Merge pull request #24 from satra/fix/multiline

fix: use multiline only when input is a string
Fixed: Support for JSON having records sharing the same identifier
They will be merged into single records
Merge branch 'master' of git@github.com:trungdong/prov.git
Fixed: UnicodeEncodeError error
- Replaced all unsafe str() cast to unicode()
- Refactored various functions to produce unicode strings
Fixed: (JSON) Support for membership with multiple members
This will create multiple membership relations, one for each member.
However, JSON round-trip mapping will be broken for document containing
such relations.
Initial attempt at setting up tests
Fixed: Support for long literals (i.e. longer than 255 characters)
Fixed: Support for unlimited-length URI in namespace