Atomic tasks

[pingbird]

A nice feature to have would be atomic tasks which will only context switch to other atomic tasks when yielded with taskDelay sort of like co-routine based multitasking. This would eliminate the need for mutexes on every variable shared by tasks.

Combined with this you could also have taskCreate instantly yield to the task its creating, allowing you to pass structs without dynamic allocation or statics since pointers to the struct on the caller's stack would still be valid