Merge branch 'release/v0.4.1' into develop
Fix importing of feeds where null instance references can contain spaces
Add Juha Yrjölä to authors
Support non-ascii in *.rst
Add test for issue #36
Merge branch 'juha_master' into develop
Set name of imported feeds from feed data

Fixes #33
Allow importing an extracted feed

Fixes #30
Allow JSONField to be blank and null, fixes admin

Fixes #37
Import extracted text in Py3, re #30
Make coverage 100% on PY3
Version bump to 0.4.2
Merge branch 'release/v0.4.2'