bump version to 1.5.6 and update copyright string

Author: martin2250

Diff for: OpenCNCPilot/Properties/AssemblyInfo.cs

@@ -10,7 +10,7 @@
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("martin2250")]
 [assembly: AssemblyProduct("OpenCNCPilot")]
-[assembly: AssemblyCopyright("Copyright ©martin2250  2018")]
+[assembly: AssemblyCopyright("Copyright ©martin2250  2019")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
@@ -49,5 +49,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.5.5.0")]
-[assembly: AssemblyFileVersion("1.5.5.0")]
+[assembly: AssemblyVersion("1.5.6.0")]
+[assembly: AssemblyFileVersion("1.5.6.0")]