Row and Column Iterator for Matrices (#29749)
* first pass, sans tests
* add test
* refactor a bit
* fix eltype to show views
* fix whitespace
* fix typo
* rename [ci skip]
* typofix [ci skip]
* add eachslice() [ci skip]
* eachcolumn => eachcol and a bit of error handling [ci skip]
* feedback
* fix whitespace
* refactor eachslice; type-stable now?
* git feedback
* more git feedback
* remove default for eachslice
* add tests
* prune eachrow eachcol exports and newline fix?
* typo in exports
* update docs for AbstractArray [ci skip]
* Update test/arrayops.jl
Co-Authored-By: arnavs <soodarnav01@gmail.com>
* Update base/abstractarraymath.jl
Co-Authored-By: arnavs <soodarnav01@gmail.com>
* bikeshedding
* Add missing backticks and improve message
[ci skip]
* add exports for eachcol, eachrow
[ci skip]
