Baking compatibility with add_compiled (#12)
* Update of the config now optional+ possibility to retrieve baked wfs
Baking now allows a simple retrieval of baked waveforms, that can be created according under the constraint of being of a certain length (to ensure compatibility with overriding waveforms with add_compiled feature). Update of original config file no more compulsory, one can now also specify if update of the config should induce an overridable waveform or not
* Added example for pre_compile usage + changed the input parameters for b
Instead of declaring a matching length constraint, one has now to indicate a baking index that indicates which baked waveform should be overwritten (and ensure it matches its length for overriding it with add_compiled)
* Reformat
* Added method delete_baked_Op
This new method (called using b.delete_baked_Op(qe)) allows the direct removal from the input config of the baking object the associated baked operation and associated waveforms
