Add support for Eclipse 4.11.0 auto formatter

[iemejia]

Eclipse 4.11 (2019/3) was released recently so it would be nice to update the support for it.

[fvgh]

Can do. Would like to combine it with #292. But that will take a while...
You can also provide a simple PR if you like. JDT upgrade is quite simple. Have a look...

[iemejia]

Done PTAL at #384