Initial multi-grammar refactoring
Tests and fixes for multi-grammar
Fixed configuration to allow multiple hiero models
Small fixes to get multi-grammar working
Fixed span limit
Merge branch 'master' of github.com:neubig/travatar

Conflicts:
	src/include/travatar/config-travatar-runner.h
	src/lib/lookup-table-fsm.cc
	src/test/test-lookup-table-fsm.h
Fixed problem with unk, trace output
Fixed another problem with unknowns
Filter multiple models