config-edit: added deprecation warning in Synopsis
Node: fix typo in doc
Model: clarified model plugin doc
Model: Moved pod to end of file
Model: removed trailing spaces
Model: rename $raw_model into $target_model in include*
Doc: moved model plugin in advanced manual
Node: removed unnecessary dclone
model test: better init
Exception: improved error message
fix test init
use eq_or_diff
fix test init and use eq_or_diff
test: use eq_or_diff instead of is_deeply
deleted obsolete tests
Fstab model: added missing relatime option
Model: completely re-organized the way a model is loaded

Previous loader was a mess and broke when trying to "augment" an
inherited class. This is now fixed. From a user's point of view, the main
change is that model are created when required.
fix test: element order after inclusion is slightly changed