Is the development of invoicing module open to other people?

Is the development of invoicing modules and other great modules done by Kndati open to other community members?
We have improved account_invoicing, account_invoicing_template, account_invoicing_check, account_invoice_create modules: Changed Tabs to 4 spaces, added object security rules, added tools for translating the modules, added UoM in analytic lines computation, avoid infinite recursion writing in ir.cron objects, ...
We have also done some little improvement in server_migration module. It is a pity this work can not be commit and be used for other people.
I have wrote several emails in the last 6 weeks asking about becoming a member of account_invoicing project in launchpad without any answer. So, I am thinking about putting these modules with these improvements in addons-extra branch if the development of these modules are not opened to others.
Jordi
We have improved account_invoicing, account_invoicing_template, account_invoicing_check, account_invoice_create modules: Changed Tabs to 4 spaces, added object security rules, added tools for translating the modules, added UoM in analytic lines computation, avoid infinite recursion writing in ir.cron objects, ...
We have also done some little improvement in server_migration module. It is a pity this work can not be commit and be used for other people.
I have wrote several emails in the last 6 weeks asking about becoming a member of account_invoicing project in launchpad without any answer. So, I am thinking about putting these modules with these improvements in addons-extra branch if the development of these modules are not opened to others.
Jordi