pubmed support

Features:

• Import from pubmed
• Select citation search engines

3.8.0rc1

Update djangojs.po (POEditor.com)

update to 3.7.0

3.7.0rc3

3.7.0rc3

Update GESIS Search API

Fixes:

• Use different request for GESIS Search API

3.2.0: First production release

release 3.2.0