Catch latch generator

This design generates custom catch-latches. It can be used to construct latches of arbitrary size and strength.

See the online documentation of [parameters] for more information.

[parameters]: https://royasutton.github.io/omdl-snapshot/docs/html/omdl-v0.9.8/group__parts__3d__fastener__catch__latch.html

#### Dependencies

To use this design, the following one-time setup is required. This will install several packages, so you may wish to experiment on a virtual machine first. *(NOTE: an X server graphics environment is required and this build process has been tested on debian and ubuntu Linux)*.

> $ wget http://git.io/setup-omdl.bash && chmod +x setup-omdl.bash
>
> $ ./setup-omdl.bash --branch v0.9.8 --no-excludes --yes --local-toolchain --install

This will take a while to test the [omdl] library, build its [documentation], and compile the design-flow automation [tools]. Once complete, the library documentation will have been installed and can be viewed with the web browser of your