Merge branch 'release/v0.2.0' into develop
add entry to release history

forgot about that
fix problem with spaces in references generated by msgmerge tool

when msgmerge tool is used to generate the po file from a pot file,
references might be merged into one line, separated by spaces. There
seems to be a bug in pofile library. This is a work-around for this. It
should go upstream. However, if this fix goes upstream, this code will
still work, so it is safe to push this into a now release.
bump version for new release
Merge branch 'release/v0.2.1'