Skip pagebreak blocks when parsing epub file (#58)

## Summary

* Skip pagebreak blocks when parsing epub file
* These blocks break the flow and often contain the page number in them
which should not interrupt the flow of the content
- Attributes sourced from:
  - https://www.w3.org/TR/epub-ssv-11/#pagebreak
  - https://www.w3.org/TR/dpub-aria-1.1/#doc-pagebreak

lib/Epub/Epub/parsers/ChapterHtmlSlimParser.cpp

@@ -75,6 +75,18 @@ void XMLCALL ChapterHtmlSlimParser::startElement(void* userData, const XML_Char*
     return;
   }
 
+  // Skip blocks with role="doc-pagebreak" and epub:type="pagebreak"
+  if (atts != nullptr) {
+    for (int i = 0; atts[i]; i += 2) {
+      if (strcmp(atts[i], "role") == 0 && strcmp(atts[i + 1], "doc-pagebreak") == 0 ||
+          strcmp(atts[i], "epub:type") == 0 && strcmp(atts[i + 1], "pagebreak") == 0) {
+        self->skipUntilDepth = self->depth;
+        self->depth += 1;
+        return;
+      }
+    }
+  }
+
   if (matches(name, HEADER_TAGS, NUM_HEADER_TAGS)) {
     self->startNewTextBlock(TextBlock::CENTER_ALIGN);
     self->boldUntilDepth = min(self->boldUntilDepth, self->depth);

platformio.ini

@@ -1,5 +1,5 @@
 [platformio]
-crosspoint_version = 0.6.0
+crosspoint_version = 0.7.0
 default_envs = default
 
 [base]