removed extraneous imports and tokens
removed unused reserved keywords in sort
Added a function to create a ParseTreeNode from a dict.
abstract done
change space
Added the ability to get a list of commands and argument tuples from a parse tree.
Merge pull request #79 from salspaugh/parsetree

Added some useful functions to the parsetree module.
Merge pull request #53 from salspaugh/warning-cleanup

Warning cleanup
finished outputlookup
updated tests for inputlookup and outputlookup
Merge pull request #80 from salspaugh/outputlookup

finished outputlookup
Merge pull request #77 from salspaugh/abstract

abstract done
Merge branch 'xmlkv' of github.com:salspaugh/splparser into xmlkv
left with 2 test
xmlkv done