Support for minification

Indentation and new lines should be minified based on a configuration parameter.

### Implementation Details

```cpp
class EndInstructionInsertion{}

*insert << endinstr(); // will create an EndInstructionInsertion
```

Depending if it's minified or not, `EndInstructionInsertion` will output either `\n` or `;`.

```indent``` function will also need to be modified