Fix converter state not being reset

Sources/HTMLStreamer/AttributedStringConverter.swift

@@ -45,6 +45,8 @@ public struct AttributedStringConverter<Callbacks: HTMLConversionCallbacks> {
         
         actionStack = []
         styleStack = []
+        previouslyFinishedBlockElement = false
+        currentElementIsEmpty = true
         currentRun = ""
         
         while let token = tokenizer.next() {

Sources/HTMLStreamer/TextConverter.swift

@@ -31,6 +31,10 @@ public struct TextConverter<Callbacks: HTMLConversionCallbacks> {
         tokenizer = Tokenizer(chars: html.unicodeScalars.makeIterator())
         str = ""
         
+        previouslyFinishedBlockElement = false
+        currentElementIsEmpty = true
+        currentRun = ""
+        
         while let token = tokenizer.next() {
             switch token {
             case .character(let scalar):