Improved format of [node-tags] token to not include a leading space
Fixed shortening to within 140 characters so that it gets as close as possible
PHP4 compatibility (switched str_ireplace() to str_replace())

Changed JavaScript window-open method so it doesn't refresh the page
Updated documentation

#618628 Hashtags pulled from taxonomy

Added services - Metamark, short.ie, urlb.at, cli.gs, PiURL, urlCover
Added in-code documentation of ways to access other services
API change - removed $q parameter of tweet_to_twitter()
Improved in-code documentation formatting
Updated README.txt to reflect changes

 - Added hook to add additional URL abbreviation services.
 - Added tr.im URL abbreviation service.
 - Minor related cleanup.

- Admin can now fully customize the Tweet text
- API change

- retrieved URLs are now cached
- conditional code loading in 6.x
- 5 new URL abbreviation services added
- new option to choose primary and backup URL abbreviation service
- ability to exclude certain nodes from showing the Tweet link