Changes in version 0.1.7 (2022-08-09)                  

  - Uneval the code in vignette when the profile is not correct.

                 Changes in version 0.1.6 (2022-07-04)                  

  - Fixed error due to void version (NULL) of return papers.

                 Changes in version 0.1.5 (2022-06-01)                  

  - Fixed query in scholar_search() due to API change.
  - Appended a new free key.

                 Changes in version 0.1.4 (2021-10-30)                  

  - Fixed the error when NULL returned in scholar_search().

                 Changes in version 0.1.3 (2021-05-17)                  

  - Updated the XPath to query author information in scholar_search().

                 Changes in version 0.1.2 (2020-10-26)                  

  - Removed server option and auto-select servers with time limite.

                 Changes in version 0.1.1 (2020-09-19)                  

  - Added robust code to check if there is query time left, and remind
    user to create one if necessary.

                 Changes in version 0.1.0 (2020-09-02)                  

  - First release.
  - Added a NEWS.md file to track changes to the package.