masak/interactive tardis session

## interactive tardis session
$ tardis -e 'my $a = 42; my $b := $a; $b = 5'
# Compiling '-e'...
# Running...
# Finished. Ticks: 0..3
> look
{
  $a = Any
  $b = Any
}
> go 1
{
  $a = 42
  $b = Any
}
> step
{
  $a = 42
  $b = 42
}
> n
{
  $a = 5
  $b = 5
}
> go 1
{
  $a = 42
  $b = Any
}
> quit
$
	$ tardis -e 'my $a = 42; my $b := $a; $b = 5'
	# Compiling '-e'...
	# Running...
	# Finished. Ticks: 0..3
	> look
	{
	$a = Any
	$b = Any
	}
	> go 1
	{
	$a = 42
	$b = Any
	}
	> step
	{
	$a = 42
	$b = 42
	}
	> n
	{
	$a = 5
	$b = 5
	}
	> go 1
	{
	$a = 42
	$b = Any
	}
	> quit
	$