Merge pull request #39 from uudashr/tracing

Add diagnostic capability

Merge pull request #38 from uudashr/fix-nesting-else-elseif

Fix nesting inside else/else if

Upgrade dependencies

Add retraction of version v1.1.1

Support ignore directive (#30)

Support ignore directive (#30)

- Support json output by @davidkroell

- Fix sequence of logical operator issue by @rliebz

Upgrade dependencies

Removed support for indirect recursion

Added support for indirect recursion