Changes:
 - Move 'stdin' from being a property of the adapter of a specific input to being part of the global tool adapter, for consistency with 'stdout'
 - Add '--basedir' parameter and resolve relative paths in the input using 'basedir'.
 - Add support for "$job" pointers into the job order, usable anywhere "$expr" is supported.
 - 5 out of 6 conformance tests pass.
Merge pull request #78 from curoverse/rabix-feature-conformance

Changes: