v0.7.3

TopOpt v0.7.3

Diff since v0.7.2

Closed issues:

• [doc] explain truss input file format in documentation (#138)
• Visualize compression and tension members through colors (red and blue) in Julia (#143)
• StressTruss missing "getdim" (#146)

Merged pull requests:

• ForwardDiff upper bound (#149) (@mohamed82008)
• Debug truss_stress.jl coupled variable R (#152) (@pitipatw)