Release note 070 (#842)

* First version of 070 release notes

* Missed a bugfix

* Vim added unexpected space -- fix

Author: franchuterivera

doc/releases.rst

@@ -11,6 +11,36 @@
 Releases
 ========
 
+Version 0.7.0
+=============
+
+* ADD #785: user control to reduce the hard drive memory required to store ensembles
+* ADD #794: iterative fit for gradient boosting
+* ADD #795: add successive halving evaluation strategy
+* ADD #814: new sklearn.metrics.balanced_accuracy_score instead of custom metric
+* ADD #815: new experimental evaluation mode called iterative_cv
+* MAINT #774: move from scikit-learn 0.21.X to 0.22.X
+* MAINT #791: move from smac 0.8 to 0.12
+* MAINT #822: make autosklearn modules PEP8 compliant
+* FIX #733: fix for n_jobs=-1
+* FIX #739: remove unnecessary warning
+* FIX ##769: fixed error in calculation of meta features
+* FIX #778: support for python 3.8
+* FIX #781: support for pandas 1.x
+
+Contributors
+************
+
+* Andrew Nader
+* Gui Miotto
+* Julian Berman
+* Katharina Eggensperger
+* Matthias Feurer
+* Maximilian Peters
+* Rong-Inspur
+* Valentin Geffrier
+* Francisco Rivera
+
 Version 0.6.0
 =============