[skip ci] Update CHANGES (v 0.5.2.post2)
+0.5.2.post2 (December 12, 2018)
+===============================
+
+ * [FIX] ``get_metadata_for_nifti`` broken in transfer from fmriprep (#267)
+
0.5.2.post1 (December 10, 2018)
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