v1.4.4

DataFrames v1.4.4

Diff since v1.4.3

Closed issues:

• Segmentation fault Julia 1.8.2, DataFrames v1.4.3 (#3227)
• sizeof() not working correctly with Dataframes (#3229)
• subset / subset! AbstractVector restriction inconvenient (#3230)

Merged pull requests:

• Explain column-independent operations (#3225) (@bkamins)
• Fix unstack docstring (#3226) (@bkamins)
• fix select bug with copycols=false on SubDataFrame (#3231) (@bkamins)
• fix markdown tests (#3234) (@bkamins)