[ChangeLog] Actualize

ChangeLog

@@ -1,3 +1,30 @@
+version <unreleased>
+
+Core
++ [utils] Add sami mimetype to mimetype2ext
+
+Extractors
+* [culturebox] Improve video id extraction (#14947)
+* [twitter] Improve extraction (#14197)
++ [udemy] Extract more HLS formats
+* [udemy] Improve course id extraction (#14938)
++ [stretchinternet] Add support for portal.stretchinternet.com (#14576)
+* [ellentube] Fix extraction (#14407, #14570)
++ [raiplay:playlist] Add support for playlists (#14563)
+* [sonyliv] Bypass geo restriction
+* [sonyliv] Extract higher quality formats (#14922)
+* [fox] Extract subtitles
++ [fox] Add support for Adobe Pass authentication (#14205, #14489)
+- [dailymotion:cloud] Remove extractor (#6794)
+* [xhamster] Fix thumbnail extraction (#14780)
++ [xhamster] Add support for mobile URLs (#14780)
+* [generic] Don't pass video id as mpd id while extracting DASH (#14902)
+* [ard] Skip invalid stream URLs (#14906)
+* [porncom] Fix metadata extraction (#14911)
+* [pluralsight] Detect agreement request (#14913)
+* [toutv] Fix login (#14614)
+
+
 version 2017.12.02
 
 Core