Added assert() to base library

also fixed regression in call()

src/cosmo.h

@@ -7,8 +7,12 @@
 #include <stdbool.h>
 #include <stdio.h>
 
+#include <assert.h>
+
 //#define NAN_BOXXED
 
+#define COSMOASSERT(x) assert(x)
+
 // forward declare *most* stuff so our headers are cleaner
 typedef struct CState CState;
 typedef struct CChunk CChunk;