A simple version of expression tree pruning has already been implemented. In this ticket a more advanced and extensible version of expression simplification should be implemented.

Sub-tasks:

• Add method for retrieving nested Tree child #377 🏁
• Convert Tree to "nested parentheses" string #378 🏁
• Parse "nested parentheses" string to Tree object #379 🏁
• Add TreeNode.map method #380 🏁
• DSL for matching sub-trees #386 🏁
• DSL for tree rewrite rule #387 🏁