Numbers with more than one decimal point raise error

`value = 1.2.5` will give the following error `Expected newline or ':' after assignment` even though it's valid brightscript code. The last part gets clipped off so wouldn't want to use this likely but also shouldn't give an error either. Same with:

```
value = {
    "test": 1.3.1.4
}
```

Gives `Unmatched '{' - expected '}' after associative array literal``