Thickness and In Bounds check - keyword args

[Codyk12]

Added the ability to draw lines with a thickness

[johnnychen94]

To fix CI error on 1.0:

# src/compat.jl
if v"1.0" <= VERSION < v"1.1"
    isnothing(x) = x===nothing
end

[agarret7]

Are there any plans for merging this soon? My use case relies on thickness of lines and otherwise I'll have to fallback to using PIL with PyCall.

[johnnychen94]

We need to merge #29 first and rebase this PR on the top of that

I'll see if that one is good to merge.

[Codyk12]

Unfortunately, this library doesn't have the biggest community supporting it, so we decided to try to use another drawing library to use in the library we're making, hopefully, these features get put merged in soon though.

[ashwanirathee]

@Codyk12 can I give it a go?I think I can do it in a more simplified way with RectanglePoints #52