some questions of protocol

Hello again,

 Being recently new to the list, i don't know yet, the usual process to 
contribute to the project. I've been working on python api to access 
aramtures and, recenty but not yet working, vertex weights.  I've been 
looking at the documentation of the new API but it still seems a little 
bit confusing to me. Specially it's difficult to distinguish between 
both versions of tha API in the implementation. I've been tracking 
things by reverse engineering, and some work fine, others don't yet.
 How could i contribute these things? I have experience with CVS, but 
don't want to break blender, and i don't feel so confident yet to be 
sure i haven't broken anything else (i think i  haven't).  I've been 
working over the main branch following michael advice, should i make a 
patch so someone else could check what i've done?

(bandoler)