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- [ ] page-flip behaviour (see #12) - [ ] clarify direction of the annotation arrows for when you want to change the styling (see #19) - [ ] add...

Return type changes depending on user input; this is surprising and likely to break code

1

The data returned by ScatterWidget depends on user input, specifically whether the user only ever added points of one, or of more colors: - one color only ("regression style"): widget.data_as_X_y...

Eventually retire `chol_lower` and `chol_upper`

1

Now that https://github.com/JuliaLang/LinearAlgebra.jl/pull/1186 is merged, once it can be used by downstream packages, the `chol_lower` and `chol_upper` wrappers in [chol.jl](https://github.com/JuliaStats/PDMats.jl/blob/master/src/chol.jl) can probably be retired. :)

Inconsistency in `eigen` interface for specialised methods

1

Some of the implementations such as `eigen(::SymTridiagonal)` don't actually accept the keyword arguments of the other implementations, `scale`, `permute`, `sortby`. (`eigen(::Diagonal)` does accept even permute and scale though it just...