proxy release of 2.2.1

Hello,
 
Are you going to release a proxy package of 2.2.1 ? I found the proxy package
of 2.0.5 very useful since I am using the proxy functionnalities only in my
projects. And of course I cannot afford to add 8 Mo of files since most of
them are unused.
 
So If someone can help me! I have already tried to make my own proxy pacakge
for 2.2.0 but I don't know which file are mandatory and which aren't.
 
Thank you,
 
Stéphane