[ChangeLog] Actualize

ChangeLog

@@ -1,3 +1,23 @@
+version <unreleased>
+
+Core
+* [postprocessor/xattr] Clarify NO_SPACE message (#14970)
+* [downloader/http] Return actual download result from real_download (#14971)
+
+Extractors
++ [itv] Extract more subtitles and duration
+* [itv] Improve extraction (#14944)
++ [byutv] Add support for geo restricted videos
+* [byutv] Fix extraction (#14966, #14967)
++ [bbccouk] Fix extraction for 320k HLS streams
++ [toutv] Add support for special video URLs (#14179)
+* [discovery] Fix free videos extraction (#14157, #14954)
+* [tvnow] Fix extraction (#7831)
++ [nickelodeon:br] Add support for nickelodeon brazil websites (#14893)
+* [nick] Improve extraction (#14876)
+* [tbs] Fix extraction (#13658)
+
+
 version 2017.12.10
 
 Core