search_api_attachments 8.x-1.0-beta4

This is D8 beta4 release of search_api_attachments module.

This module depends on search_api that is stable, but search_api_attachments is not yet stable and so not recommended to use in production.

Especially, note that there is no data update path for this module's configuration!

This release fixes only bugs

All commits since the beta3 version:

* 329c412 Issue #2981539 by focus13, izus: Delete all collaction search_api_attachments after uninstalling the modules
* 06a670c Issue #2908043 by kalistos, skorzh, izus: Non-overridable config
* 457a978 Issue #2980665 by tomhollevoet, izus: Excluded file extensions/mimes are ignored if the field formatter
* fa54a5a Issue #2470553 by izus: Little update in README.txt
* cd8fbf2 Issue #2470553 by izus: Update the SIMPLE USAGE EXAMPLE section in README.txt
* 7e0a995 Issue #2886233 by izus: Minor documentation update.
* f1e721b Issue #2886233 by janusman, izus: Avoid unnecessary processing for text files
* 2605c18 Issue #2909846 by bapi_22: No need to inject currentUser
* 334ed51 Issue #2886205 by izus: Fix calling DEFAULT_EXCLUDED_EXTENSIONS.
* e508f28 Issue #2886205 by dhruveshdtripathi, janusman, Disha.addweb, izus: Fix typo 'FilesExtrator'
* 6d03f93 Issue #2965947 by rovo, selvakumar, mkalkbrenner, izus: Getting error when enable processors for File attachments
* 6cfceeb Issue #2884453 by malik.kotob, acbramley, janusman, fenstrat, izus: Add exception handling to prevent indexing from halting
* a88825c Issue #2955936 by yunqiang, acbramley, fenstrat, izus: ExtractedText formatter doesn't check whether the file is indexable properly, results in private files never being indexed