[BUG] Reduced Infinite Variables

[pulsipher]

Describe the bug
Reduced infinite variables cannot account for partially transcribed parameter tuple array elements. This leads to incorrect measure expansion.

To Reproduce

using InfiniteOpt, JuMP
m=InfiniteModel()
@infinite_parameter(m, x[1:2] in [0, 2])
@infinite_parameter(m, t in [0, 1])
@infinite_variable(m, y(t, x))
expand(integral(y, x[1], num_supports = 2))

y(t, 0.02083778845386952) + y(t, 1.6710951524438982) # x dimensions are lost

Expected behavior
Reduced variables should be able to partially transcribe arrays of parameters and maintain structure.

Desktop (please complete the following information):

• OS: Windows10
• Package Versions : InfiniteOpt v0.1.0
• Julia Version: 1.2

Additional context
This should be resolved by redoing how reduced variables are structured and made. Also, we should make a data object for better storing parameter tuples and propagate it through.