Added 3.5.6-rc1 changelog

docs/en/04_Changelogs/rc/3.5.6-rc1.md

@@ -0,0 +1,25 @@
+# 3.5.6-rc1
+
+<!--- Changes below this line will be automatically regenerated -->
+
+## Change Log
+
+### Bugfixes
+
+ * 2017-11-30 [84d7afb34]() Use baseDataClass for allVersions as with other methods (Daniel Hensby)
+ * 2017-11-24 [09a003bc1]() deprecated usage of getMock in unit tests (Daniel Hensby)
+ * 2017-11-23 [2ad3cc07d]() Update meber passwordencryption to default on password change (Daniel Hensby)
+ * 2017-11-16 [dda14e895]() HTTP::get_mime_type with uppercase filenames. (Roman Schmid)
+ * 2017-11-16 [52f0eadd3]() for #7606: Ensure the object we're handling is actually an Image instance before calling methods specific to that class (e.g. in case of using SVG's in &lt;img&gt; tag which may be File instances). (Patrick Nelson)
+ * 2017-11-15 [ce3fd370f]() ManyMany link table joined with LEFT JOIN (Daniel Hensby)
+ * 2017-11-09 [1053de7ec]() Don't redirect in force_redirect() in CLI (Damian Mooyman)
+ * 2017-10-25 [cbac37559]() Helpful warning when phpunit bootstrap appears misconfigured (Daniel Hensby)
+ * 2017-10-25 [32cef975e]() Use self::inst() for Injector/Config nest methods (Daniel Hensby)
+ * 2017-10-19 [a73d5b41](https://github.com/silverstripe/silverstripe-cms/commit/a73d5b4177be445128a6fa42e20dd8df13eaf554) revert to this button after archiving (Christopher Joe)
+ * 2017-10-12 [fd39faee](https://github.com/silverstripe/silverstripe-cms/commit/fd39faeefd5241cf96313e968142183de767c51b) UploadField overwriteWarning isn't working in AssetAdmin (Jason)
+ * 2017-10-09 [264cec123]() Dont use var_export for cache key generation as it fails on circular references (Daniel Hensby)
+ * 2017-10-04 [24e190ea](https://github.com/silverstripe/silverstripe-cms/commit/24e190ea8265d16445a3210f7b06de191e474004) TreeDropdownField showing broken page icons (fixes silverstripe/silverstripe-framework#7420) (Loz Calver)
+ * 2017-09-12 [0aac4ddb](https://github.com/silverstripe/silverstripe-cms/commit/0aac4ddb7ecf0f17eda8add235017c10c9f57255) Default LoginForm generated from default_authenticator (Daniel Hensby)
+ * 2017-08-13 [2f579b64c]() Files without extensions (folders) do not have a trailing period added (Robbie Averill)
+ * 2017-07-04 [00f1ad5d6]() Fixes #7116 Improves server requirements docs viz: OpCaches. (Russell Michell)
+ * 2016-03-20 [805c38f10]() don't try and switch out of context of the tab system (Stevie Mayhew)