Bump requirement from 2.0.2 to 2.1.0 to support urlize_columns

[BennyE]

Fixes #246 as 2.1.0 introduced support for urlize_columns-keyword to render_table MACRO.

[codecov-commenter]

Codecov Report

Merging #247 (9aa6c17) into master (438a299) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #247   +/-   ##
=======================================
  Coverage   97.01%   97.01%           
=======================================
  Files           1        1           
  Lines         134      134           
  Branches       23       23           
=======================================
  Hits          130      130           
  Misses          1        1           
  Partials        3        3           

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[greyli]

Thanks!