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	̖͕H̅̓o̞ͣ̑l҈᷅a̸̬͚͟a̷᷆͟a̖᷀᷇͘aͤ
Overline	H̅o̅l̅a̅a̅a̅a̅
Double overline	H̿o̿l̿a̿a̿a̿a̿
Long center	H̶o̶l̶a̶a̶a̶a̶
Short center	H̵o̵l̵a̵a̵a̵a̵
Short underline	H̠o̠l̠a̠a̠a̠a̠
Underline	H̲o̲l̲a̲a̲a̲a̲
Vertical line	H⃒o⃒l⃒a⃒a⃒a⃒a⃒
Double vertical	H⃦o⃦l⃦a⃦a⃦a⃦a⃦
Slash	H̸o̸l̸a̸a̸a̸a̸
Backslash	H⃥o⃥l⃥a⃥a⃥a⃥a⃥
Double slash	H⃫o⃫l⃫a⃫a⃫a⃫a⃫
Dot	Ḣȯl̇ȧȧȧȧ
Many dots	H⃜o⃜l⃜a⃜a⃜a⃜a⃜
Under dots	H⃨o⃨l⃨a⃨a⃨a⃨a⃨
Smileys	H̆̈ŏ̈l̆̈ă̈ă̈ă̈ă̈
Over Xed	H̽o̽l̽a̽a̽a̽a̽
Under Xed	H͓o͓l͓a͓a͓a͓a͓
Multi Xed	H͓̽o͓̽l͓̽a͓̽a͓̽a͓̽a͓̽
Starburst	H҉o҉l҉a҉a҉a҉a҉
Understar	H͙o͙l͙a͙a͙a͙a͙
Overstar	H⃰o⃰l⃰a⃰a⃰a⃰a⃰
Multistar	H͙⃰o͙⃰l͙⃰a͙⃰a͙⃰a͙⃰a͙⃰
Capped	H᷍o᷍l᷍a᷍a᷍a᷍a᷍
Parens	H᪾o᪾l᪾a᪾a᪾a᪾a᪾
Boxed	H⃞o⃞l⃞a⃞a⃞a⃞a⃞
Rounded box	H⃢o⃢l⃢a⃢a⃢a⃢a⃢
Circled	H⃝o⃝l⃝a⃝a⃝a⃝a⃝
Diamonded	H⃟o⃟l⃟a⃟a⃟a⃟a⃟
Disallowed	H⃠o⃠l⃠a⃠a⃠a⃠a⃠
Triangled	H⃤o⃤l⃤a⃤a⃤a⃤a⃤
Keycap	H⃣o⃣l⃣a⃣a⃣a⃣a⃣