Add regression test for exponential complexity of recursive imports
Fix exponential complexity of recursive imports
Remove logging code which has a detrimental performance impact on processing recursive imports
Suppress OPTIONS_IN_DELEGATE warning if all options match the root grammar (fixes #707)
Deprecate ALL_OPS_NEED_SAME_ASSOC (fixes #652)
Add regression test for #670
NullUsageProcessor supports Java 6 through 8 (fixes #487)
Add Parser.isTrace() (fixes #701)
Merge pull request #714 from sharwell/fix-652

Deprecate ALL_OPS_NEED_SAME_ASSOC
Merge pull request #717 from sharwell/fix-701

Add Parser.isTrace()
Merge pull request #716 from sharwell/fix-670

Add regression test for #670
Merge pull request #715 from sharwell/fix-487

NullUsageProcessor supports Java 6 through 8
Merge pull request #713 from sharwell/fix-707

Improved support for recursive imports