changelog
    
    
    - Sun, 17 Jun 2018 17:07:29 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 17 Jun 2018 17:07:29 +0300] rev 1407
 
    - added support for open/closed cylinders in LDCircularPrimitive
 
    - Sun, 17 Jun 2018 16:13:24 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 17 Jun 2018 16:13:24 +0300] rev 1406
 
    - Circular primitive editor complete
 
    - Sun, 17 Jun 2018 14:06:03 +0300
 
    - by Teemu Piippo <teemu@hecknology.net> [Sun, 17 Jun 2018 14:06:03 +0300] rev 1405
 
    - replaced overloads with a new 'xyz' function