Ambiguities detected from Aqua

While testing Aqua.jl in AlgebraicTemplate, Aqua.jl returned a list of method ambiguities [defined here](https://web.mit.edu/julia_v0.6.2/julia/share/doc/julia/html/en/manual/methods.html#man-ambiguities-1) in Catlab.jl. I'm sharing the list it generated here, and whether there's interest in resolving them. I'm willing to take on this task.
[ambiguities.txt](https://github.com/AlgebraicJulia/Catlab.jl/files/14500861/ambiguities.txt)