Marking TODO items in `list-servers.inc.php`. See: websharks/s2member#303
Adding `mailchimp.inc.php`. See: websharks/s2member#303
Adding `aweber.inc.php`. See: websharks/s2member#303
Adding `getresponse.inc.php`. See: websharks/s2member#303
Setup arg defaults. See: websharks/s2member#303
Setup arg defaults. See: websharks/s2member#303
Base class w/ arg validator. See: websharks/s2member#303
Refactor MailChimp. See: websharks/s2member#303
Refactor MailChimp. See: websharks/s2member#303
Refactor GetResponse. See: websharks/s2member#303
Refactor GetResponse. See: websharks/s2member#303
Refactor GetResponse. See: websharks/s2member#303
Refactor AWeber. See: websharks/s2member#303
Refactor AWeber. See: websharks/s2member#303
Refactor AWeber. See: websharks/s2member#303
Refactor `list-servers.inc.php`. See: websharks/s2member#303
Refactor `list-servers.inc.php`. See: websharks/s2member#303
Refactor `list-servers.inc.php`. See: websharks/s2member#303
Move old AWeber routines into `aweber-e.inc.php` for back compat. See: websharks/s2member#303
Support both AWeber integration types: `api|email`. See: websharks/s2member#303