Merge pull request #3964 from erwincoumans/master

pybullet bump up to 3.19

VERSION

@@ -1 +1 @@
-3.18
+3.19

setup.py

@@ -501,7 +501,7 @@ if 'BT_USE_EGL' in EGL_CXX_FLAGS:
 
 setup(
     name='pybullet',
-    version='3.1.8',
+    version='3.1.9',
     description=
     'Official Python Interface for the Bullet Physics SDK specialized for Robotics Simulation and Reinforcement Learning',
     long_description=

src/LinearMath/btScalar.h

@@ -25,7 +25,7 @@ subject to the following restrictions:
 #include <float.h>
 
 /* SVN $Revision$ on $Date$ from http://bullet.googlecode.com*/
-#define BT_BULLET_VERSION 318
+#define BT_BULLET_VERSION 319
 
 inline int btGetVersion()
 {

src/LinearMath/btSerializer.h

@@ -481,7 +481,7 @@ public:
 
 		buffer[9] = '3';
 		buffer[10] = '1';
-		buffer[11] = '8';
+		buffer[11] = '9';
 	}
 
 	virtual void startSerialization()