Add Changelog file

CHANGELOG.md

@@ -0,0 +1,52 @@
+# Changelog History
+
+## 1.5.2
+
+First released, May 15th 2020
+
+### Major changes
+
+* PR #375 merged to avoid mutliple tf.graph instantiation failures
+
+### Minor changes
+
+* PR #362 use tf.abs instead of numpy
+* PR #352 tempdir cleaning
+
+
+## 1.5.1
+
+First released, April 15th 2020
+
+### Major changes
+
+* Bugfixes on the LibRosa STFT backend
+
+### Minor changes
+
+* Typos, and small bugfixes
+
+## 1.5.0
+
+First released, March 20th 2020
+
+### Major changes
+
+* Implement a new STFT backend using LibRosa, faster on CPU than TF implementation
+* Switch tensorflow version to 1.15.2
+
+### Minor changes
+
+* Typos, and small bugfixes
+
+## 1.4.9
+
+First released, Dec 27th 2019
+
+### Major changes
+
+* Add new configuration for processing until 16Khz
+
+### Minor changes
+
+* Typos, and small bugfixes