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	H̡̜̥o̭̳̙͢͝w͎ ͚͖͠a̖ͣ҇߳r̯̈e̶͟͢ ̤̗̈́ẏ͓߳߫oͯ̔̉͟ư̮!̮̂
Overline	H̅o̅w̅ ̅a̅r̅e̅ ̅y̅o̅u̅!̅
Double overline	H̿o̿w̿ ̿a̿r̿e̿ ̿y̿o̿u̿!̿
Long center	H̶o̶w̶ ̶a̶r̶e̶ ̶y̶o̶u̶!̶
Short center	H̵o̵w̵ ̵a̵r̵e̵ ̵y̵o̵u̵!̵
Short underline	H̠o̠w̠ ̠a̠r̠e̠ ̠y̠o̠u̠!̠
Underline	H̲o̲w̲ ̲a̲r̲e̲ ̲y̲o̲u̲!̲
Vertical line	H⃒o⃒w⃒ ⃒a⃒r⃒e⃒ ⃒y⃒o⃒u⃒!⃒
Double vertical	H⃦o⃦w⃦ ⃦a⃦r⃦e⃦ ⃦y⃦o⃦u⃦!⃦
Slash	H̸o̸w̸ ̸a̸r̸e̸ ̸y̸o̸u̸!̸
Backslash	H⃥o⃥w⃥ ⃥a⃥r⃥e⃥ ⃥y⃥o⃥u⃥!⃥
Double slash	H⃫o⃫w⃫ ⃫a⃫r⃫e⃫ ⃫y⃫o⃫u⃫!⃫
Dot	Ḣȯẇ ̇ȧṙė ̇ẏȯu̇!̇
Many dots	H⃜o⃜w⃜ ⃜a⃜r⃜e⃜ ⃜y⃜o⃜u⃜!⃜
Under dots	H⃨o⃨w⃨ ⃨a⃨r⃨e⃨ ⃨y⃨o⃨u⃨!⃨
Smileys	H̆̈ŏ̈w̆̈ ̆̈ă̈r̆̈ĕ̈ ̆̈y̆̈ŏ̈ŭ̈!̆̈
Over Xed	H̽o̽w̽ ̽a̽r̽e̽ ̽y̽o̽u̽!̽
Under Xed	H͓o͓w͓ ͓a͓r͓e͓ ͓y͓o͓u͓!͓
Multi Xed	H͓̽o͓̽w͓̽ ͓̽a͓̽r͓̽e͓̽ ͓̽y͓̽o͓̽u͓̽!͓̽
Starburst	H҉o҉w҉ ҉a҉r҉e҉ ҉y҉o҉u҉!҉
Understar	H͙o͙w͙ ͙a͙r͙e͙ ͙y͙o͙u͙!͙
Overstar	H⃰o⃰w⃰ ⃰a⃰r⃰e⃰ ⃰y⃰o⃰u⃰!⃰
Multistar	H͙⃰o͙⃰w͙⃰ ͙⃰a͙⃰r͙⃰e͙⃰ ͙⃰y͙⃰o͙⃰u͙⃰!͙⃰
Capped	H᷍o᷍w᷍ ᷍a᷍r᷍e᷍ ᷍y᷍o᷍u᷍!᷍
Parens	H᪾o᪾w᪾ ᪾a᪾r᪾e᪾ ᪾y᪾o᪾u᪾!᪾
Boxed	H⃞o⃞w⃞ ⃞a⃞r⃞e⃞ ⃞y⃞o⃞u⃞!⃞
Rounded box	H⃢o⃢w⃢ ⃢a⃢r⃢e⃢ ⃢y⃢o⃢u⃢!⃢
Circled	H⃝o⃝w⃝ ⃝a⃝r⃝e⃝ ⃝y⃝o⃝u⃝!⃝
Diamonded	H⃟o⃟w⃟ ⃟a⃟r⃟e⃟ ⃟y⃟o⃟u⃟!⃟
Disallowed	H⃠o⃠w⃠ ⃠a⃠r⃠e⃠ ⃠y⃠o⃠u⃠!⃠
Triangled	H⃤o⃤w⃤ ⃤a⃤r⃤e⃤ ⃤y⃤o⃤u⃤!⃤
Keycap	H⃣o⃣w⃣ ⃣a⃣r⃣e⃣ ⃣y⃣o⃣u⃣!⃣