v1.15.0

SDDP v1.15.0

Diff since v1.14.0

Merged pull requests:

• [docs] add an even more advanced capacity expansion model (#905) (@odow)
• Add SDDP.plot(::Graph[, filename::String]; open::Bool = true) (#906) (@odow)
• [docs] improve the docstrings of evaluate and ValueFunction (#907) (@odow)
• Polish integer variables in get_outgoing_state (#909) (@odow)
• Add atol and rtol arguments to BoundStalling (#910) (@odow)
• Add support for nodes which sum to > 1 (#911) (@odow)
• Add LoggingForwardPass (#913) (@odow)
• Prep for v1.15.0 (#914) (@odow)

Closed issues:

• Evaluating at multidimensional state ? (#703)
• Change SDDP.simulate to use forward_pass (#871)
• Log forward passes to a file (#912)