Sublime Text user experience

[dxb]

"pre_debug_task" was hanging because "shell_cmd" expects a string and I was 
passing an array of strings instead. It was easy to find out what was wrong 
with this task once I figured 'Debugger->Run Task' does report errors on the 
console. Running the same task as part of starting a debug session just hangs 
and no error is reported anywhere.