Upgraded version number for last changes.

CMakeLists.txt

 project( "slop" )
 set( slop_VERSION_MAJOR 4 )
 set( slop_VERSION_MINOR 2 )
-set( slop_VERSION_PATCH 17 )
+set( slop_VERSION_PATCH 18 )
 
 set( CMAKE_OPENGL_SUPPORT FALSE CACHE BOOL "Whether or not to compile with OpenGL, shaders, magnification, and theming support." )
 

README.md

 help
 ----
 ```text
-slop v4.2.17
+slop v4.2.18
 
 Copyright (C) 2014 Dalton Nell, Slop Contributors
 (https://github.com/naelstrof/slop/graphs/contributors)