search_api_attachments 8.x-1.0-alpha4

This is D8 alpha4 release of search_api_attachments module.

It is compatible with search_api 8.x-1.0-alpha16

This module depends on search_api that is not yet stable, and so, it is not recommended to use this version in production.

Especially, note that there will be no data update path for this module's configuration while the module is in Alpha status!

This release fixes some bugs and adds some features.

Notable New Features :
- We now provide a hook to alter files indexability, so you can per example prevent indexing files added by a special user...
- We now can extract files content of a File datasource index or Mixed index with File datasource in it.

All commits :

* dba7764 (HEAD, tag: 8.x-1.0-alpha4, origin/8.x-1.x, 8.x-1.x) Issue #2470553 by izus: Fix pareview.sh report.
* c898972 Issue #2470553 by Grimreaper, izus: Use DI everywhere.
* 0d647e6 by izus : Use statics for properties prefixes.
* a94a7a8 Issue #2765601 by izus: Do not index unnecessary properties in mixed indexes.
* 4a1779b Issue #2765601 by izus: Index content of files not attached to nodes
* 9638081 by izus: Rename search_api_attachments Plugin folder.
* 594496d by izus: Rename processor class.
* a9b522b by izus: Fix typo.
* b5400f2 Issue #2757973 by izus: moduleHandler()->invokeAll() should have an array as second parameter.
* 4e3cfa1 by izus : Adapt processor code with the last code base of search_api.
* 1e53370 by izus: Document that we provide hook_search_api_attachments_indexable.
* 34fe6f5 Issue #2757973 by bdragon, izus: Add a hook for customizing indexability of files.
* 70eb317 Issue #2711931 by izus: Add a simple usage example in README.txt
* 5ba79bd Issue #2694561 by izus: Use config_object instead of mapping in schema