DSL: rename assert to asserting

Too much of a clash with the assert builtin.

src/syndicate.nim

@@ -153,7 +153,7 @@ template onStop*(body: untyped): untyped =
     proc getCurrentFacet(): Facet {.inject, used.} = facet
     body
 
-template assert*(a: Preserve): untyped =
+template asserting*(a: Preserve): untyped =
   mixin getCurrentFacet
   getCurrentFacet().addEndpoint do (_: Facet) -> EndpointSpec:
     result.assertion = a

src/syndicate/drivers/timers.nim

@@ -24,8 +24,8 @@ syndicate timerDriver:
       if period > 0:
         getCurrentFacet().beginExternalTask()
         addTimer(period.int, oneshot = true) do (fd: AsyncFD) -> bool:
-          react: assert(TimeLaterThan % deadline)
+          react: asserting(TimeLaterThan % deadline)
           getCurrentFacet().endExternalTask()
           true
       else:
-        react: assert(TimeLaterThan % deadline)
+        react: asserting(TimeLaterThan % deadline)

tests/test_dsl.nim

@@ -12,7 +12,7 @@ syndicate testDsl:
 
   spawn "box":
     field(currentValue, int, 0)
-    assert(BoxState.init currentValue.get)
+    asserting(BoxState.init currentValue.get)
     stopIf currentValue.get == 10:
       echo "box: terminating"
     onMessage(SetBox % `?*`) do (newValue: int):