Merge remote-tracking branch 'origin' into feature/add-epub-css-parsing

* origin:
  fix: truncate chapter names that are too long (#422)
  feat: dict based Hyphenation (#305)
  fix: render U+FFFD replacement character instead of ? (#366)
  fix: Invert colors on home screen cover overlay when recent book is selected (#390)
  Adds KOReader Sync support (#232)
  feat: Change keyboard "caps" to "shift" & Wrap Keyboard (#377)
  fix: XTC 1-bit thumb BMP polarity inversion (#373)

lib/GfxRenderer/GfxRenderer.cpp

@@ -596,7 +596,7 @@ void GfxRenderer::drawTextRotated90CW(const int fontId, const int x, const int y
   while ((cp = utf8NextCodepoint(reinterpret_cast<const uint8_t**>(&text)))) {
     const EpdGlyph* glyph = font.getGlyph(cp, style);
     if (!glyph) {
-      glyph = font.getGlyph('?', style);
+      glyph = font.getGlyph(REPLACEMENT_GLYPH, style);
     }
     if (!glyph) {
       continue;
@@ -774,8 +774,7 @@ void GfxRenderer::renderChar(const EpdFontFamily& fontFamily, const uint32_t cp,
                              const bool pixelState, const EpdFontFamily::Style style) const {
   const EpdGlyph* glyph = fontFamily.getGlyph(cp, style);
   if (!glyph) {
-    // TODO: Replace with fallback glyph property?
-    glyph = fontFamily.getGlyph('?', style);
+    glyph = fontFamily.getGlyph(REPLACEMENT_GLYPH, style);
   }
 
   // no glyph?