Add new paper

[RishabhMaheshwary]

Request to add a new paper:
Generating Natural Language Attacks in a Hard Label Black Box Setting, accepted in AAAI 2021 main conference.
Paper: Link to paper.
Code: Link to code.

Brief Outline:
The paper proposes a novel decision based attack strategy that utilizes population-based optimization algorithm to generate adversarial examples by observing only the topmost predicted label.

[RishabhMaheshwary]

The paper is in the accepted paper list of AAAI 2021.

[yangalan123]

Big thanks for the paper recommendation! Sorry, we are busy with the ACL deadline. Will check and merge later.

[yangalan123]

Your paper has been added. Thanks for the recommendation and if you have any problem, please re-open the issue again!