The `targetFeatureToExtension` function used by reconstructFromParsedFeatures only found positive `+FEATURE` strings, but not negative `-FEATURE` strings. Extend the function to handle both to fix `reconstructFromParsedFeatures`.
The `targetFeatureToExtension` function used by reconstructFromParsedFeatures only found positive `+FEATURE` strings, but not negative `-FEATURE` strings. Extend the function to handle both to fix `reconstructFromParsedFeatures`.