v1.4.0

DataFrames v1.4.0

Diff since v1.3.6

Closed issues:

• Metadata for columns and/or DataFrames (#35)
• What metadata should be (#2276)
• Add metadata (#2961)
• Add precompilation for PooledArray for all allowed ref types (#3013)
• update precompilation for 1.4 release (#3080)
• Require Julia 1.6 (#3136)
• Metadata: follow-up notes (#3168)
• Add references to names documentation (#3171)
• sync Tables.subset (#3180)
• change valuestransform in unstack (#3184)
• better handling of corner cases of GroupedDataFrame printing (#3186)
• Version incompatibility with PrettyTables.jl (#3188)

Merged pull requests:

• Metadata on data frame and column level (#3055) (@bkamins)
• Use PrettyTables.jl as HTML backend (#3096) (@ronisbr)
• Improved REPL printing for GroupedDataFrames (#3107) (@Jollywatt)
• 1-arg permutedims(df) (#3115) (@anandijain)
• Require Julia 1.6 (#3145) (@bkamins)
• synch NEWS.md between 1.4 and 1.3 branches (#3164) (@bkamins)
• add ShiftedArrays 2.x support (#3165) (@bkamins)
• improve error message when column is not found (#3166) (@bkamins)
• Improve metadata documentation (#3169) (@bkamins)
• Reduce memory use in threading correctness tests (#3172) (@yakir12)
• Fix typos in metadata docs (#3174) (@nalimilan)
• fix metadata handling in permutedims (#3176) (@bkamins)
• Add better error message on error when pushing rows to a data frame (#3177) (@bkamins)
• improve names docstring (#3178) (@bkamins)
• Avoid method dispatch ambiguities in DataFrames.jl (#3179) (@bkamins)
• switch from view to viewhint in Tables.subset (#3181) (@bkamins)
• precompilation for 1.4 release (#3182) (@bkamins)
• enable multithreading tests of joins only on 64 bit machines (#3183) (@bkamins)
• rename valuestransform to combine in unstack (#3185) (@bkamins)
• improve printing of GroupedDataFrame in corner cases (#3187) (@bkamins)
• Sync metadata implementation with DataAPI.jl 1.12.0 (#3189) (@bkamins)
• Fix deprecation warning when sorting data frame with no columns (#3190) (@bkamins)