Move all definitions from emper.hpp in compilation unit

emper/include/emper.hpp

@@ -11,31 +11,15 @@
 #include "Runtime.hpp"
 #include "SynchronizedFiber.hpp"
 
-void async(Fiber* fiber) {
-	assert(fiber != nullptr);
-	Runtime* runtime = Runtime::getRuntime();
-	runtime->schedule(*fiber);
-}
+void async(Fiber* fiber);
 
-void async(Fiber::fiber_fun_t function, void* arg) {
-	Fiber* fiber = Fiber::from(std::move(function), arg);
-	async(fiber);
-}
+void async(Fiber::fiber_fun_t function, void* arg);
 
-void async(const Fiber::fiber_fun0_t& function) {
-	Fiber* fiber = Fiber::from(function);
-	async(fiber);
-}
+void async(const Fiber::fiber_fun0_t& function);
 
-void async(Fiber::fiber_fun_t function, void* arg, workeraffinity_t* affinity) {
-	Fiber* fiber = Fiber::from(std::move(function), arg, affinity);
-	async(fiber);
-}
+void async(Fiber::fiber_fun_t function, void* arg, workeraffinity_t* affinity);
 
-void async(const Fiber::fiber_fun0_t& function, workeraffinity_t* affinity) {
-	Fiber* fiber = Fiber::from(function, affinity);
-	async(fiber);
-}
+void async(const Fiber::fiber_fun0_t& function, workeraffinity_t* affinity);
 
 template <typename S>
 void spawn(Fiber::fiber_fun_t function, void* arg, S& semaphore) {
@@ -69,10 +53,7 @@ void init_runtime(workerid_t worker_count);
 
 void destroy_runtime();
 
-void yield() {
-	Runtime* runtime = Runtime::getRuntime();
-	runtime->yield();
-}
+void yield();
 
 auto sleep(unsigned int seconds) -> bool;