Merge tag '2.9.1' into develop

Release 2.9.1
add another filter for requests
now that Twitter and Facebook both support whitespace, no need to strip it
protect against errant non-string status_id
verify the validity of status_id
update README
Merge branch 'feature/too-long-error' into develop
update forum URL, fixes #152
spanish translation first version
80% Spanish translated
Adding Italian localization files
French translation / Traduction française
update CHANGELOG and version #s
Merge branch 'release/2.9.2'