How complete is the tensorflow c api?

According to this, tensorflow c api lacks many features, but this is from three years ago. How much have changed since then?

Hi @k355l3r-5yndr0m3 ,

TensorFlow C API continuously upgrading by adding more features for supporting on creation or development of TensorFlow functionality in other programming languages. Please refer to this upgraded document “TensorFlow in other languages” for more details in this. Thank You