[ChangeLog] Actualize

ChangeLog

@@ -1,3 +1,26 @@
+version <unreleased>
+
+Core
++ [downloader/fragment] Commit part file after each fragment
++ [extractor/common] Add durations for DASH fragments with bare SegmentURLs
++ [extractor/common] Add support for DASH manifests with SegmentLists with
+  bare SegmentURLs (#14844)
++ [utils] Add hvc1 codec code to parse_codecs
+
+Extractors
+* [xhamster] Fix extraction (#14884)
+* [youku] Update ccode (#14872)
+* [mnet] Fix format extraction (#14883)
++ [xiami] Add Referer header to API request
+* [mtv] Correct scc extention in extracted subtitles (#13730)
+* [vvvvid] Fix extraction for kenc videos (#13406)
++ [br] Add support for BR Mediathek videos (#14560, #14788)
++ [daisuki] Add support for motto.daisuki.com (#14681)
+* [odnoklassniki] Fix API metadata request (#14862)
+* [itv] Fix HLS formats extraction
++ [pbs] Add another media id regular expression
+
+
 version 2017.11.26
 
 Core