Create WARC 1.1 records instead of WARC 1.0 records

Currently heritrix3 writes WARC records conformant with the WARC 1.0 standard.
Browsing through the WARCWriterProcessor that we're currently extending in NetarchiveSuite (org.archive.modules.writer.WARCWriterProcessor) it seems that it uses a WARCWriter and WARCConstants classes from archive-commons package, that hardwires its WARC to WARC version 1.0

Imports in the WARCWriterProcessor from the archive-commons package:

import org.archive.io.warc.WARCRecordInfo;
import org.archive.io.warc.WARCWriter;
import org.archive.io.warc.WARCWriterPool;
import org.archive.io.warc.WARCWriterPoolSettings;

import static org.archive.format.warc.WARCConstants

The easiest way to implement 1.1 would to copy the above classes inside the folder:
https://github.com/netarchivesuite/netarchivesuite/tree/master/harvester/heritrix3/heritrix3-extensions/src/main/java

And then adapt the WARCConstants to be 1.1 compliant instead