v4.0.0-alpha.6

4.0.0-alpha.6 (2021-03-15)

Features

• mapkeyby: add mapKeyBy function (4a9572e)
• mapkeyfirstby: add mapKeyFirstBy function (2f9c825)
• push: add push function (be3e78e)
• shuffle: deprecate shuffle function (4238f37)
• unshift: add unshift function (06b0e9a)