changelog
    
    
    - Fri, 08 Jun 2018 23:06:56 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Fri, 08 Jun 2018 23:06:56 +0300] rev 1394
 
    - fixed cylinder rendering
 
    - Thu, 07 Jun 2018 23:24:02 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Thu, 07 Jun 2018 23:24:02 +0300] rev 1393
 
    - changed rotation matrix to quaternion in GLRenderer
 
    - Mon, 04 Jun 2018 23:22:52 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Mon, 04 Jun 2018 23:22:52 +0300] rev 1392
 
    - fix compiler warnings