[release][0.1] update Changelog

CHANGELOG.rst

+Change Log
+==========
+
+
+0.1.0
+-----
+
+* xas
+
+    * core
+
+        * add core processes to access the PyMca XASClass main functionnalities
+
+            * spectrum normalization (xas.core.process.normalization)
+            * exafs - Extended X-Ray Absorption Fine Structure (xas.core.process.exafs)
+            * fourier transform (xas.core.process.ft)
+            * weight (xas.core.process.weight)
+   
+    * input / output
+
+        * add function for reading spectrum from .dat files
+        * add function for reading spectrum and configuration from .h5 files
+
+    * app
+
+        * add application to process a .ows file defining a workflow without orange.
+        input spectrum file and output file can be specified.
+
+* orangecontrib
+
+    * add widgets for pymca xas processes
+
+        * pymca_normalization
+        * pymca_exafs
+        * pymca_ft
+        * pymca_k_weight
+
+    * add widgets for input and output
+
+        * xas_input
+        * xas_output