a fix for recent api changes

- is_displayed and is_highlighted argument for callback of hook_print
  are now integer
- 0.4.4 will not exist. check version for 1.0 instead
- bump to v0.3
urlselect: v0.4 added item urlselect_duplicate

- bump to v0.4
- added item urlselect_duplicate for comma separated list of duplicate
  url indexesg
- remove ignore_duplicate option. it was never checked and the script
  just forced duplicate urls to not be included :D well, not anymore.
- added simple osx detection to determine the default open command.
- added labels for default commands