✅ added roundtrip tests for UBJSON

test/data/json.org/1.json.ubjson

@@ -0,0 +1,2 @@
+{iglossary{iGlossDiv{i	GlossList{i
+GlossEntry{iAbbrevSi

test/data/json.org/2.json.ubjson

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+{imenu{iidSifileipopup{imenuitem[{ionclickSiCreateNewDoc()ivalueSiNew}{ionclickSi	OpenDoc()ivalueSiOpen}{ionclickSi
+CloseDoc()ivalueSiClose}]}ivalueSiFile}}

test/data/json.org/3.json.ubjson

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+{iwidget{idebugSioniimage{i	alignmentSicenterihOffsetUúinameSisun1isrcSiImages/Sun.pngivOffsetUú}itext{i	alignmentSicenteridataSi
+Click HereihOffsetUúinameSitext1i	onMouseUpSi)sun1.opacity = (sun1.opacity / 100) * 90;isizei$istyleSiboldivOffsetid}iwindow{iheightI
ôinameSimain_windowititleSiSample Konfabulator WidgetiwidthI
ô}}}

test/data/json.org/5.json.ubjson

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+{imenu{iheaderSi
+SVG Vieweriitems[{iidSiOpen}{iidSiOpenNewilabelSiOpen New}Z{iidSiZoomInilabelSiZoom In}{iidSiZoomOutilabelSiZoom Out}{iidSiOriginalViewilabelSi
+Original View}Z{iidSiQuality}{iidSiPause}{iidSiMute}Z{iidSiFindilabelSiFind...}{iidSi	FindAgainilabelSi
+Find Again}{iidSiCopy}{iidSi	CopyAgainilabelSi
+Copy Again}{iidSiCopySVGilabelSiCopy SVG}{iidSiViewSVGilabelSiView SVG}{iidSi