Including volume supplement and number supplement to make part of issue identification (#85)
Merge branch 'master' of git://github.com/scieloorg/balaio into 85
Tests of parse_issue_tag
Merge branch 'master' of git://github.com/scieloorg/balaio into 85
Including supplement to issue identification (Issue #85)

1. Included supplement of volume and number to ArticlePkg
2. Included supplement of volume and number to ArticlePkgStub
3. Included supplement in SPSMixin.meta, which uses new functions created in utils module.
4. Included supplement of volume and number in the filter of scieloapi.issues to use in SetupPipe
5. Tests
Merge pull request #101 from robertatakenaka/85

Issue #85 - considerar suplementos na identificação do fascículo