This PR adds the following features:

• Ability to generate aggregate reports for a set of flop solves
  • Generates one report for given set of action lines
  • Each row in the report includes ip/oop EV/equity & likelihood of all available actions for each flop, computed using weighted averages across all possible hands
  • Can optionally specify weights for flops and generate weighted average of all statistics across all flops
• Ability to generate aggregate turn reports
  • Given a set of flop solves and a single flop action line, generates report with 49N rows, where N = # of flops (all with same statistics as flop aggregate report)
• Ability to generate aggregate river reports
  • Given a set of flop solves and a single line, generate a report with 49*48N rows, where N = # of flops

Tasks

• Define aggregate report functionality within library (rather than one-off example).
• Support overwriting reports
• Take lines for reports as input, rather than generating reports for all lines
• Support aggregate reports over turn and river nodes.
• Add Global Frequency to rows
• Define test suite for aggregate report
• Thorough doc-strings
• Allow for weighted updates