Increment SONAME version and update release version in the SConscript
Update Doxygen version

Change-Id: Idd6a92d1ab29d6e8b0a99cddca3a64c23ae290fa
Signed-off-by: Isabella Gottardi <isabella.gottardi@arm.com>
diff --git a/docs/Doxyfile b/docs/Doxyfile
index d1eeee0..34c7b00 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -38,7 +38,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.0
+PROJECT_NUMBER         = 19.02
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a