v1.2.2

DataFrames v1.2.2

Diff since v1.2.1

Closed issues:

• Add method to filter on Bool column symbols (#2465)
• Enable documenter doctests (#2702)
• Extend => renaming syntax (#2728)
• add a keyword to specify group order in groupby (#2762)
• subset with grouped data frame has worse compile times than transform (#2806)
• Performance Issues with filter and subset (#2821)
• Extremely slow GroupBy behaviour on a small table (#2822)
• Is there any Julia alternatives to to_dict function in pandas? (#2824)

Merged pull requests:

• making a new top level section to work with DataFrames (#2717) (@RohitRathore1)
• make sort kwarg in groupby more flexible (#2812) (@bkamins)
• add a link to JuliaCon2021 tutorial to docs (#2817) (@bkamins)
• review of the DataFrames.jl tutorial (#2825) (@bkamins)
• correct signature of merge for AbstractIndex (#2826) (@bkamins)