Fix 2 typos
Merge pull request #111 from tritemio/model_noparams

Fix 2 typos -- thanks very much!
Fix log -> np.log
Merge pull request #112 from tritemio/model_noparams

Fix log -> np.log
Use .components, a list of sub-models, for composite models
Add some comments
Apply hints set in composite models
Allow setting a custom .name in Model
Set independent_vars of composite models from base models
Apply initial values from kw args to make_params() for composite models
Add verbose flag to print a msg when a parameter is added because of a hint
Merge pull request #113 from tritemio/model_noparams

Model noparams
use print function for Python3 compat
Model: avoid copying components to make composite; simplify eval()
add 'vary' as allowed parameter hint
tweaked fit_report
reorganized setting of parameter hints
better model representation in fit_report()
Merge branch 'model_noparams'