rewrite zotxt-generate-bib-entry-from-id as deferred
rewrite org-zotxt-open-attachment with deferred
merge
rewrite org-zotxt-open-attachment to use deferred
add org-zotxt-insert-reference-link-to-item function
use org-zotxt-insert-reference-link-to-item function
fix docstring
change zotxt-generate-bib-entry-from-id arg def
fix org-zotxt-insert-reference-link function for deferred
remove obsolete function
rename zotxt-generate-bib-entry-from-id
to zotxt-get-item-bibliography-deferred
add test running via cask, travis

--HG--
rename : testing/zotxt-test.el => test/zotxt-test.el
:bibliography -> :citation
add & use org-zotxt-test-insert-reference-links-to-items function to simplify insertion
allow easykey link text in org links