```zig usingnamespace @import("foo.zig"); ``` * [x] might plan to rename the keyword? * [ ] ~might plan to get rid of it?~ * [ ] ~try not to use this feature until it becomes stable.~ * [ ] however it makes sense to use the feature to combine imports and re-export them, like [this](https://github.com/andrewrk/tetris/blob/29f50a199d299fa95db5d923f2ac4891b7fa4c5a/src/c.zig#L1)
