Continuous scale fails if the scale limits are outside of the range of the data

```
data=dict(
x = [i for i in range(0, 6)],
c = [i for i in range(0, 6)]
)

ggplot(data)\
+ geom_point(aes(x = "x", color="c"), size=20) \
```

1. Lower limit is inside the range of the data [0..5]

```
+ scale_color_continuous(limits=[4, 10])
```

2. Lower limit >= the max of the data
```
+ scale_color_continuous(limits=[5, 10])
```
> Internal error: IllegalStateException : [ContinuousTransformWithLimits] Lower end 4.5 is outside of transform's domain.

3. Upper limit is inside of the range of the data
```
+ scale_color_continuous(limits=[-1, 1])
```

4. Upper limit <= the min of the data
```
+ scale_color_continuous(limits=[-1, 0])
```
> Internal error: IllegalStateException : [ContinuousTransformWithLimits] Upper end 0.5 is outside of transform's domain.