All tests pass with refactorings
updated readme
updated readme
updated readme
updated readme
A pile more basic unit tests for macropy/core
touch readme
tweaked tests
Added tests for walker
tweak readme
Merge branch 'master' into py3

Conflicts:
	macropy/core/__init__.py
	macropy/core/lift.py
	macropy/core/macros.py
	macropy/macros/pattern.py
	macropy/macros2/linq_test.py
	macropy/macros2/peg_test.py
	macropy/macros2/tracing.py
Core_tests (line_numbering commented out), lift_test, string_interp_test, quicklambda_test, pattern_test, adt_test, peg_test pass.
Fixed resourcewarnings (have to close files in the import hook).