Adding zeroMQ plugin.

.gitignore

-
+NuGetPackages
 # Created by https://www.gitignore.io/api/unity
 # Edit at https://www.gitignore.io/?templates=unity
 

Assets/Plugins/AsyncIO.dll.meta

+fileFormatVersion: 2
+guid: e4b77d2e7e3534c0795ffb6ae7adf1c4
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 0
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      Any: 
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        DefaultValueInitialized: true
+  - first:
+      Windows Store Apps: WindowsStoreApps
+    second:
+      enabled: 0
+      settings:
+        CPU: AnyCPU
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Plugins/NetMQ.dll.meta

+fileFormatVersion: 2
+guid: 7de465b390c024a45b25fb183afcb353
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 0
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      Any: 
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        DefaultValueInitialized: true
+  - first:
+      Windows Store Apps: WindowsStoreApps
+    second:
+      enabled: 0
+      settings:
+        CPU: AnyCPU
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Makefile

+NetMQ_VERSION=4.0.0.207
+AsyncIO_VERSION=0.1.69
+NUGET_DIRECTORY=NuGetPackages
+
 UNITY=/Applications/Unity/Hub/Editor/2019.3.3f1/Unity.app/Contents/MacOS/Unity
 UNITY_BATCH:=${UNITY} -batchmode -quit -noUpm -projectPath $(CURDIR)
 
@@ -7,5 +11,19 @@ build: Build/physicssimulator.app
 Build/physicssimulator.app: | Build
 	-${UNITY_BATCH} -buildOSX64Player $@
 
+.PHONY: setup
+setup: $(foreach P,AsyncIO NetMQ,Assets/Plugins/${P}.dll)
+
+Assets/Plugins/NetMQ.dll: ${NUGET_DIRECTORY}/NetMQ.${NetMQ_VERSION}/lib/net40/NetMQ.dll
+	@mkdir -p ${@D}
+	cp $^ $@
+
+Assets/Plugins/AsyncIO.dll: ${NUGET_DIRECTORY}/AsyncIO.${AsyncIO_VERSION}/lib/net40/AsyncIO.dll
+	@mkdir -p ${@D}
+	cp $^ $@
+
+${NUGET_DIRECTORY}/NetMQ.${NetMQ_VERSION}/lib/net40/NetMQ.dll ${NUGET_DIRECTORY}/AsyncIO.${AsyncIO_VERSION}/lib/net40/AsyncIO.dll:
+	nuget install NetMQ -Version ${NetMQ_VERSION} -OutputDirectory ${NUGET_DIRECTORY}
+
 Build:
-    @-mkdir -p $@
+	@mkdir  -p $@
\ No newline at end of file