Update README.md
Use call to relation-create-match to create relation match task.
Merge branch 'master' into core-syntax
Merge branch 'core-syntax' of github.com:metaborg/nabl into core-syntax

Conflicts:
	org.metaborg.meta.lang.nabl/trans/generation/propositions.str
cleanup core syntax
relations in core
get rid of generated SDF2 files
migrate to new SDF3 and prepare NaBL/TS merger
fix/ignore erroneous constructors
no qualities in core
fix imports
extract existing generation for core components
don't import generated completions for now
give NaBL Core a separate file ending
include Binding module
allow more scope positions in scope expressions
cannot normalise "where true" in Core
use only core generation
extract NaBLCore into its own project
extract NaBLCore into its own project