optional arguments for transformations
fix to allow &rest arguments for transforms
name change: pyel-call -> pyel-call-transform
fix: strip leading underscores in pyel-do-call-transform
`pyel-create-py-func' now a little less stupid
proper call transform
fix call transform to handle nested calls
new test generation function
variable: 'pyel-test-py-functions'
function: `pyel-functionize'
function: `pyel-generate-tests'
let bind more vars
function: `pyel-make-test-func-name'
generated tests should provide
variable: pyel-test-func-counter
var: '_pyel-tests'
rename: functionize -> pyel-functionize
new 'pyel-run-tests'
new require for test file
deleted rubbish