Migrated Twitter API from 1.0 to 1.1

There are some APIs that have been removed in API v1.1:

- get_user_profile_image
- exists_friendships
- get_retweeted_to_me
- get_retweeted_by_me

Some API like *exists_friendships* can use other API instead.
But I can't find replacements for the following API:

- get_retweeted_to_me
- get_retweeted_by_me

API *get_user_lists* (v1.1) may cause too many requested, some changes in other place will be required to fix this bug, I'll fix it later.