Export DimensionalData selectors?

[dpabon]

Not sure if it's a good idea to export the selectors from DimensionalData.jl package:

Selectors are wrappers that indicate that passed values are not the array indices, but values to be selected from the dimension index, such as DateTime objects for a Ti dimension.

Selectors provided in DimensionalData are: At Between Near Where Contains

Otherwise, it is necessary to load YAXArrays and DimensionalData package each time.

using YAXArrays, DimensionalData