Exception is now raised, if Aleph returns error during document ID parsing.
Bugfix (missing "").
Fixed bug in Marc XML parsing (titles of author).
Fixed bug in parsing of author's name.
Documentation updated. Added definitions of undefined fields. Fixes #15.
Added documentation for Aleph fields and few more fields (from webpages).

Fixes #18.
Added script to run tests from commandline.
Added TitleQuery. Fixes #17.
Added tests for TitleQuery.