Fast Release Earbud Wrap Designer v2.4

This earbud holder features:
* Convenient flat storage when not in use
* Business card size, credit card size, and custom sizes
* Quick wrapping action
* Even quicker release feature. The last loop with the audio jack holds the other loops in place. Release it, and you can release all the other loops instantly.
* Customizable location of notch for windings relative to earbud holes
* Customizable width of slots for the cord
* Customizable size of earbud holes
* Customizable corner rounding. Make the corners square, even.
* Optional central holes so you can thread the cord through them to keep it handy while you are listening
* Optional notch for the slide-off side of the winding
* Optional sloped notch for the slide-off side
* Optional tab at the end of the slide-off notch to, ironically, keep the cord from sliding off while wrapping.
* Optional jack notches on the opposite side of the card for more winding options
* Optional engraved text
* Optional additional winding notches
* Improved cord notches to hold the jack

If Thingiverse's Customizer is working, this is your best bet for customizing. If not,
+ Install the Development version of OpenSCAD (http://www.openscad.org/downloads.html#snapshots)
+ Enable the Customizer according to https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/WIP#Customizer
+ Open the .scad file
+ Set your customizations
+ Render
+ Export as an STL file

Not much in presets yet. The Default matches DavidPhillipOster's thing that I mixed from. If you find settings that work well for a recognizable pair of earbuds, let me know and I'll add them to the presets.

Want a feature added? Let me know.

Release Notes
Version 2.1
* Changed jack notch to "T" shape in the middle and flipped at the top.
* Added optional jack notches to opposite side to take up extra cord length.
* Added optional slope to winding side for easier removal.
* Reorganized customizations.

Version 2.2
* Optional engraved text.

Version 2.3
// Adjusted OnePlus presets: larger slots (from 3.3 to 3.5)
// New extra feature: Added a tab to the slide notch
// New extra feature: Added minor winding notches.
// Moved slide notch to Extras

Version 2.4
// Adjusted OnePlus presets:
//// Increase slot_width to 3.7 for OnePlus
//// Decrease earbud radius substantially
// Smaller tab on slide notch
// Minor winding slots are deeper and not added if there's not room
// Bugfix: only printing half a card

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