v0.4.0

WaterModels v0.4.0

Diff since v0.3.0

Closed issues:

• Implement variables for shutoff valves (#30)
• Implement constraints for shutoff valves (#32)
• Implement control valve data structures (#34)
• Print Summary Support (#40)
• Remove the Link Abstraction if Possible (#71)
• Implement new variables and constraints for improved tank performance (#83)
• Develop integration tests for networks with shutoff valves (#87)
• use appropriate demand values for single-time water model (#95)

Merged pull requests:

• retain source_id for junction-nodes without demand (#102) (@jjstickel)
• ADD: Optimization-based bound tightening utility (#103) (@tasseff)
• DOC: Update quick start documentation to be accurate. FIX: Explicitly separate design pipes from non-design pipes. (#104) (@tasseff)