Premium Account Still Limited to 1000 Likes via API

[nexus671]

Description
Even though my Tumblr account has Premium, the API still limits me to only 1000 likes. This seems inconsistent with the expected behavior for premium accounts.

Steps to Reproduce

Authenticate using PyTumblr with a premium Tumblr account.
Attempt to like more than 1000 posts via the API.
Observe that the limit remains at 1000 likes.

Expected Behavior
Premium accounts should not be restricted to the 1000-like limit when using the API.

Actual Behavior
The API still enforces the 1000-like limit despite the account being premium.