Function image generation

[HarrisonGrodin]

Most functions should have specific images in a given context. For example, sin and cos should be between -1 and 1 inclusive, given a real argument.

The current implementation is currently very hacky, requiring a subtype T <: AbstractContext to implement image(fn::Fn, ::T). An implementation which allows for data to be fed into an existing subtype would be more ideal.

[MasonProtter]

sin and cos of real arguments should be between -1 and 1 inclusive.

julia> sin(10im)
0.0 + 11013.232874703393im