Summary

Small PR to fix oversights which prevent custom matching and hydration rules from working.

Problems

1. Hydrator

• Problem - hydrator was checking the length of fh.Config.Matching.Rules and was skipping precompileRules if the length of it was 0
• Solution - changed len(fh.Config.Matching.Rules) to len(fh.Config.Hydration.Rules)

2. Matcher

• Problem - m.matchingRules was not initialized, causing panic: assignment to entry in nil map when adding matching rules
• Solution - added make(map[string]*compiledMatchingRule) before assigning a rule

Modified files

• internal\library\scanner\hydrator.go
• internal\library\scanner\matcher.go
• internal\library\scanner\matcher_test.go - added tests for rules at the end of a file