Bump version number for release 22
Bump version number for release 22

niksu/bookreader,garyrh/bookreader,brisandbeans/bookreader,openlibrary/bookreader,Islandora/internet_archive_bookreader,yankl/bookreader,niksu/bookreader,internetarchive/bookreader,nikolas/bookreader,garyrh/bookreader,Islandora/internet_archive_bookreader,openlibrary/bookreader,internetarchive/bookreader,brisandbeans/bookreader,Islandora/internet_archive_bookreader,gootdude/bookreader,yankl/bookreader,brisandbeans/bookreader,Islandora/internet_archive_bookreader,openlibrary/bookreader,yankl/bookreader,Islandora/internet_archive_bookreader,openlibrary/bookreader,garyrh/bookreader,garyrh/bookreader,niksu/bookreader,gootdude/bookreader,brisandbeans/bookreader,gootdude/bookreader,niksu/bookreader,gootdude/bookreader,niksu/bookreader,brisandbeans/bookreader,yankl/bookreader,openlibrary/bookreader,yankl/bookreader,garyrh/bookreader,nikolas/bookreader