DOC: prepare release notes (WIP)

RELEASE_NOTES.txt

+OTB-v.5.2.0 - Changes since version 5.0.0 (2015/11/02)
+------------------------------------------
+* Library (the corresponding requests for changes are mentioned):
+
+  * Core
+    * Read, write and manage no-data flags (RFC-1 & RFC-14)
+    * Improve otb::DEMHandler interface (RFC-2)
+    * Build examples based on available modules in OTB installation (RFC-3)
+    * Helper functions for string operations using boost (RFC-6)
+    * Gdal 2.0 support (RFC-11)
+    * Enhancement of python wrapping (RFC-12)
+
+  * Machine Learning
+    * Provide quality index for classification
+    * Regression mode in OTB and OTBApp (RFC-7)
+
+  * SAR
+    * Add basic support for Sentinel1 Product (RFC-4)
+    * Update SAR radiometric calibration application in OTB (RFC-9)
+    * New applications for SAR processing (RFC-10)
+
+  * Applications
+    * Improve ApplicationRegistry for application loading (RFC-15)
+    * Provide a default output pixel type in applications (RFC-17)
+
+  * SuperBuild
+    * Provide a script to build the all-in-one SuperBuild archive (RFC-5)
+    * New dependency : Freetype 2.6
+    * ITK 4.7.1 -> 4.8
+    * JPEG v9a -> turbo 1.4.1
+    * OpenThreads 3.2 -> 3.4
+    * Ossim r23092 -> r23537
+
+* Bug fixed:
+
+  * Monteverdi2
+    * 0001072: I18nCoreApplication::ElevationSetup() exceptions not displayed
+    * 0001070: otb::DEMHandler not updated properly when resetting DEM-directory and/or Geoid-file.
+
+  * OTB-Packaging
+    * 0001049: Last Monteverdi2 and Mapla release Win package crash when we try to import JP2 file
+
+  * Orfeo Toolbox (OTB)
+    * 0001084: Deactivate all 3rd part components in OpenCV configuration
+    * 0001081: GDAL RPC tags export prevent correct export of wkt in ortho-rectified image
+    * 0001077: Superbuild: Broken open scene graph archive link
+    * 0001069: Unable to install gdal python bindings in custom install directory with OTB Superbuild
+    * 0001065: Buiild OTB Examples based on available modules in OTB installation
+    * 0001075: prTeEstimateRPCSensorModelExampleTest  always failing in examples
+    * 0001074: Missing ITCopyright.txt in OTB sources
+    * 0001066: missing file(Capitole-Shadows) from OTB-Data
+    * 0001055: SuperBuild builds ogr2ogr without sqlite driver
+
+  * OTB-lib
+    * 0001085: Add a ::GetInput() accessor  to QtWidgetOutputImage/FilenameParameter
+    * 0001083: Extended filename parameters not updated when calling ImageFileReader<>::SetFileName() several times
+    * 0001078: Exception thrown (OTB-Ice) when opening image without projection info
+    * 0001071: Add otb::DEMHandler ::ClearDEMDirectory() and ::ClearGeoidFile() interface.
+
+
 OTB-v.5.0.0 - Changes since version 4.4.0 (2015/05/28)
 ------------------------------------------