Combining Overload

Dress some text up in a whole lot of combining characters. There are two classes here. First, in the maner of the Zalgo, a random assortment of over/under/superimposed combining chacters. The Zalgo decoration is configured with the from prefixing, postfixing, or both, and a number of extras to add settings. Secondly, the text is overlaid with a single combined character on top of every input character.

Zalgo	I̛̊҄̇ǹ͙g̻̩̋r̨̟̼̀͢e҇͞͡s̥͋ͮe͗ ̟͑̀߳᷀s͙͛̕u҉͟ ̭ͥt̛᷈᷈̈e̻̦̗ͥx̬͟t҈̪o͎͛̀
Overline	I̅n̅g̅r̅e̅s̅e̅ ̅s̅u̅ ̅t̅e̅x̅t̅o̅
Double overline	I̿n̿g̿r̿e̿s̿e̿ ̿s̿u̿ ̿t̿e̿x̿t̿o̿
Long center	I̶n̶g̶r̶e̶s̶e̶ ̶s̶u̶ ̶t̶e̶x̶t̶o̶
Short center	I̵n̵g̵r̵e̵s̵e̵ ̵s̵u̵ ̵t̵e̵x̵t̵o̵
Short underline	I̠n̠g̠r̠e̠s̠e̠ ̠s̠u̠ ̠t̠e̠x̠t̠o̠
Underline	I̲n̲g̲r̲e̲s̲e̲ ̲s̲u̲ ̲t̲e̲x̲t̲o̲
Vertical line	I⃒n⃒g⃒r⃒e⃒s⃒e⃒ ⃒s⃒u⃒ ⃒t⃒e⃒x⃒t⃒o⃒
Double vertical	I⃦n⃦g⃦r⃦e⃦s⃦e⃦ ⃦s⃦u⃦ ⃦t⃦e⃦x⃦t⃦o⃦
Slash	I̸n̸g̸r̸e̸s̸e̸ ̸s̸u̸ ̸t̸e̸x̸t̸o̸
Backslash	I⃥n⃥g⃥r⃥e⃥s⃥e⃥ ⃥s⃥u⃥ ⃥t⃥e⃥x⃥t⃥o⃥
Double slash	I⃫n⃫g⃫r⃫e⃫s⃫e⃫ ⃫s⃫u⃫ ⃫t⃫e⃫x⃫t⃫o⃫
Dot	İṅġṙėṡė ̇ṡu̇ ̇ṫėẋṫȯ
Many dots	I⃜n⃜g⃜r⃜e⃜s⃜e⃜ ⃜s⃜u⃜ ⃜t⃜e⃜x⃜t⃜o⃜
Under dots	I⃨n⃨g⃨r⃨e⃨s⃨e⃨ ⃨s⃨u⃨ ⃨t⃨e⃨x⃨t⃨o⃨
Smileys	Ĭ̈n̆̈ğ̈r̆̈ĕ̈s̆̈ĕ̈ ̆̈s̆̈ŭ̈ ̆̈t̆̈ĕ̈x̆̈t̆̈ŏ̈
Over Xed	I̽n̽g̽r̽e̽s̽e̽ ̽s̽u̽ ̽t̽e̽x̽t̽o̽
Under Xed	I͓n͓g͓r͓e͓s͓e͓ ͓s͓u͓ ͓t͓e͓x͓t͓o͓
Multi Xed	I͓̽n͓̽g͓̽r͓̽e͓̽s͓̽e͓̽ ͓̽s͓̽u͓̽ ͓̽t͓̽e͓̽x͓̽t͓̽o͓̽
Starburst	I҉n҉g҉r҉e҉s҉e҉ ҉s҉u҉ ҉t҉e҉x҉t҉o҉
Understar	I͙n͙g͙r͙e͙s͙e͙ ͙s͙u͙ ͙t͙e͙x͙t͙o͙
Overstar	I⃰n⃰g⃰r⃰e⃰s⃰e⃰ ⃰s⃰u⃰ ⃰t⃰e⃰x⃰t⃰o⃰
Multistar	I͙⃰n͙⃰g͙⃰r͙⃰e͙⃰s͙⃰e͙⃰ ͙⃰s͙⃰u͙⃰ ͙⃰t͙⃰e͙⃰x͙⃰t͙⃰o͙⃰
Capped	I᷍n᷍g᷍r᷍e᷍s᷍e᷍ ᷍s᷍u᷍ ᷍t᷍e᷍x᷍t᷍o᷍
Parens	I᪾n᪾g᪾r᪾e᪾s᪾e᪾ ᪾s᪾u᪾ ᪾t᪾e᪾x᪾t᪾o᪾
Boxed	I⃞n⃞g⃞r⃞e⃞s⃞e⃞ ⃞s⃞u⃞ ⃞t⃞e⃞x⃞t⃞o⃞
Rounded box	I⃢n⃢g⃢r⃢e⃢s⃢e⃢ ⃢s⃢u⃢ ⃢t⃢e⃢x⃢t⃢o⃢
Circled	I⃝n⃝g⃝r⃝e⃝s⃝e⃝ ⃝s⃝u⃝ ⃝t⃝e⃝x⃝t⃝o⃝
Diamonded	I⃟n⃟g⃟r⃟e⃟s⃟e⃟ ⃟s⃟u⃟ ⃟t⃟e⃟x⃟t⃟o⃟
Disallowed	I⃠n⃠g⃠r⃠e⃠s⃠e⃠ ⃠s⃠u⃠ ⃠t⃠e⃠x⃠t⃠o⃠
Triangled	I⃤n⃤g⃤r⃤e⃤s⃤e⃤ ⃤s⃤u⃤ ⃤t⃤e⃤x⃤t⃤o⃤
Keycap	I⃣n⃣g⃣r⃣e⃣s⃣e⃣ ⃣s⃣u⃣ ⃣t⃣e⃣x⃣t⃣o⃣