search_api_attachments 7.x-1.4

This is the Search API Atachments 1.4 release, containing numerous bug fixes and one new feature.

Notable changes since release 1.3:

• #2177677 by Grimreaper, izus: Fixed Error while indexing txt files.
• #2277473 by izus | yannis_p: Tika is not called correctly in Windows.
• #2273305 by janusman, izus | jastraat: Fixed Incompatible with Acquia Search.
• #2207783 by pianomansam: Java requirement doesn't use apachesolr_attachments_java variable.
• #2207801 by pianomansam: Cache table doesn't clear when flushing caches.
• #2188735 by izus | welly: Notice: Undefined property: SearchApiAttachmentsAlterSettings::$CACHE_TABLE.
• #2158395 by izus, chaby: Wrong use of keywork "self" make inheritance override impossible.
• #2126103 by izus, thePanz | cmkeane: Notice: Undefined property in SearchApiAttachmentsAlterSettings->alterItems().
• #2162351 by idebr: Warning: Invalid argument supplied for foreach() in SearchApiAttachmentsAlterSettings->extract_exif() .