DOC: Update Changelog

Author: effigies

Changelog

@@ -24,6 +24,57 @@ Gerhard (SG) and Eric Larson (EL).
 
 References like "pr/298" refer to github pull request numbers.
 
+Upcoming Release
+================
+
+New features
+------------
+
+Enhancements
+------------
+* Simplfiy MGHImage and add footer fields (pr/569) (CM, reviewed by MB)
+* Force sform/qform codes to be ints, rather than numpy types (pr/575) (Paul
+  McCarthy, reviewed by MB, CM)
+* Auto-fill color table in FreeSurfer annotation file (pr/592) (Paul McCarthy,
+  reviewed by CM, MB)
+* Set default intent code for CIFTI2 images (pr/604) (Mathias Goncalves,
+  reviewed by CM, Satra Ghosh, MB, Tim Coalson)
+* Raise informative error on empty files (pr/611) (Pradeep Raamana, reviewed
+  by CM, MB)
+* Accept degenerate filenames such as ``.nii`` (pr/621) (Dimitri
+  Papadopoulos-Orfanos, reviewed by Yaroslav Halchenko)
+
+Bug fixes
+---------
+* Preserve first point of `LazyTractogram` (pr/588) (MC, reviewed by Nil
+  Goyette, CM, MB)
+* Stop adding extraneous metadata padding (pr/593) (Jon Stutters, reviewed by
+  CM, MB)
+* Accept lower-case orientation codes in TRK files (pr/600) (Kesshi Jordan,
+  MB, reviewed by MB, MC, CM)
+* Annotation file reading (pr/592) (Paul McCarthy, reviewed by CM, MB)
+* Fix buffer size calculation in ArraySequence (pr/597) (Serge Koudoro,
+  reviewed by MC, MB, Eleftherios Garyfallidis, CM)
+* Resolve ``UnboundLocalError`` in Python 3 (pr/607) (Jakub Kaczmarzyk,
+  reviewed by MB, CM)
+* Do not crash on non-``ImportError`` failures in optional imports (pr/618)
+  (Yaroslav Halchenko, reviewed by CM)
+
+Maintenance
+-----------
+* Use SSH address to use key-based auth (pr/587) (CM, reviewed by MB)
+* Fix doctests for numpy 1.14 array printing (pr/591) (MB, reviewed by CM)
+* Refactor for pydicom 1.0 API changes (pr/599) (MB, reviewed by CM)
+* Increase test coverage, remove unreachable code (pr/602) (CM, reviewed by 
+  Yaroslav Halchenko, MB)
+* Move ``nib-ls`` to a new cmdline module (pr/601) (Chris Cheng, reviewed by
+  MB, Yaroslav Halchenko)
+* Remove deprecated numpy indexing (EL, reviewed by CM)
+
+API changes and deprecations
+----------------------------
+
+
 2.2.1 (Wednesday 22 November 2017)
 ==================================