Renamed VariableSymbol to ParameterSymbol, introduced layer variable...

Renamed VariableSymbol to ParameterSymbol, introduced layer variable declarations and changed IOSymbol to VariableSymbol which now combines IO variables and layer variables
3 jobs for develop in 4 minutes and 54 seconds (queued for 1 second)
Status Job ID Name Coverage
  Windows
passed #428931
Windows10
masterJobWindows

00:01:27

 
  Linux
passed #431405
BranchJobLinux

00:03:26

failed #428932
BranchJobLinux

00:01:05