missing new API endpoints

[33mhz]

Numerous not included. Need to list what's missing, and add them!

• /posts/search
• /posts/streams/explore
• /posts/{post_id}/report
• /users/search
• /presence
• /channels/search
• /channels/messages/search
• /channels/{channel_id}/messages/{message_id}/sticky
• /channels/{channel_id}/messages/{message_id}/report
• /streams
• /markers
• /polls
• /polls/{poll_id}
• /users/me/polls
• /polls/{poll_id}/response (was /polls/{poll_id}/response/{position})

[spacenerdmo]

I started editing the primary comment to be edited as items are discovered and subsequently implemented.