Calling the API for specific point in time

Are there any plans to make it possible to call the API for a specific asset/market at a specific points in time?

I'm specifically looking into
`get_asset`, `get_settle_orders` and `get_order_book`
http://185.208.208.184:5000/apidocs/#!/asset/api_explorer_get_asset

I saw that making an ES plugin for historical snapshots were discussed here some time ago: https://github.com/bitshares/bitshares-core/issues/205

Start by reviewing the API entry points for get_asset, get_settle_orders, and get_order_book, using the linked API documentation and the discussion in bitshares-core issue 205 for context. Determine how a historical timestamp or block would be represented and whether historical snapshots are available; done means the three endpoints return the requested asset or market state at a specified point in time.

Written by the indexing model from the issue text.