Update docs

Author: GromNaN

UPGRADE-1.18.md

@@ -0,0 +1,11 @@
+# UPGRADE FROM 1.x to 1.18
+
+## Required options
+
+### GridFS disableMD5 option must be true
+
+Starting with 1.18, not passing the `disableMD5` option to `Database::getGridFSBucket()`
+is deprecated. You should explicitly pass `true` to this option to disable
+checksum computation. This feature is deprecated in the GridFS specification.
+In version 2.0 of the mongodb library, the default value will be `true` and an
+exception will be thrown if you set another value.

docs/reference/method/MongoDBDatabase-selectGridFSBucket.txt

@@ -48,7 +48,7 @@ Parameters
        - boolean
        - Whether to disable automatic MD5 generation when storing files.
 
-         Defaults to ``false``.
+         Defaults to ``false``. Only ``true`` will be supported in 2.0.
 
          .. versionadded: 1.4
 

docs/reference/method/MongoDBGridFSBucket-openUploadStream.txt

@@ -55,7 +55,7 @@ Parameters
        - boolean
        - Whether to disable automatic MD5 generation when storing files.
 
-         Defaults to ``false``.
+         Defaults to ``false``. Only ``true`` will be supported in 2.0.
 
          .. versionadded: 1.4
 

docs/reference/method/MongoDBGridFSBucket-uploadFromStream.txt

@@ -59,7 +59,7 @@ Parameters
        - boolean
        - Whether to disable automatic MD5 generation when storing files.
 
-         Defaults to ``false``.
+         Defaults to ``false``. Only ``true`` will be supported in 2.0.
 
          .. versionadded: 1.4
 

docs/reference/method/MongoDBGridFSBucket__construct.txt

@@ -59,7 +59,7 @@ Parameters
        - boolean
        - Whether to disable automatic MD5 generation when storing files.
 
-         Defaults to ``false``.
+         Defaults to ``false``. Only ``true`` will be supported in 2.0.
 
          .. versionadded: 1.4