Update changelog

CHANGES.rst

@@ -8,6 +8,17 @@ Version 2.0.31
 
 Release date to be decided.
 
+- Update requirements (`#486
+  <https://github.com/mutalyzer/mutalyzer/pull/486>`_).
+- Add support for NCBI E-utilities API key (`#485
+  <https://github.com/mutalyzer/mutalyzer/pull/485>`_).
+- Update HGVS descriptions retrieval for SNP converter (`#482
+  <https://github.com/mutalyzer/mutalyzer/issues/482>`_)
+- Make file selection mandatory in the batch job web page  (`#481
+  <https://github.com/mutalyzer/mutalyzer/issues/481>`_).
+- Update Travis configuration (`#483
+  <https://github.com/mutalyzer/mutalyzer/pull/483>`_)
+
 
 Version 2.0.30
 ---------------