clean

https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties#Custom_property_fallback_values

.three {
  background-color: var(--my-var, var(--my-background, pink));
--border-color: linear-gradient(to top, var(--secondary-color), var(--used-color, white));
}

Description

Given the following component dom:

<div class="group1">
  <muh-component></muh-component>
  <muh-component></muh-component>
</div>
<div class="group2">
  <muh-component></muh-component>
  <muh-component></muh-component>
</div>

There does not seem to exist a concise way to query for component instances within a group of MuhComponent using `spectator.query(M

Thanks for so great Tmux plugin.
It would be nice to have a variable to provide separator charchers to make it more configurable.
I'll add few self-explanatory images.

![image](https://user-images.githubusercontent.com/1059539/12