[*] Renamed the fill function to fillFromKey this is more consistent with the function that is called inside this wrapper.

[*] Fixed a bug related to getting a dateTime object from a timestamp. Added function to get datum version. Fixed the calling convention and the name of the function to get the size of the datum.

[*] Changed the error related to the fact that the signature of the callback getting an iterator atom has changed.

[+] Added attributes for reading data from dap chain_datum_token_t and dap chain _datum_token_emission_t.

[+] Added a wrapper over dag events and work with dag chains. Everything is geared towards obtaining information about being and information from the event's dag.

[+] Added functions for checking whether a datum, a declaration token and an emission token, and also added functions for getting wrapper objects dap_chain_datum_token_t, dap_chain_datum_token_emission_t. The function of getting the string representation of the datum type has also been added.