Quetzalcoatal: A public service announcement

"If your code will be seen by the world at large, one of your first tasks should be to write documentation. Document all functions as soon as you write them (before is also helpful). Provide samples on how to use code as soon as you finish a module (or earlier, if possible). Do not wait until your 5.0 release. Do not wait until your 1.0 release. Do not even wait until your 0.5 release. Do it as you write your code. The sooner, the better."