fix: pass in type for swift to use the correct variable types (#158)

Author: jsalaber

example/ios/Podfile.lock

@@ -5,7 +5,7 @@ PODS:
     - DevCycle (= 1.17.1)
     - Flutter
   - Flutter (1.0.0)
-  - LDSwiftEventSource (3.1.1)
+  - LDSwiftEventSource (3.3.0)
 
 DEPENDENCIES:
   - devcycle_flutter_client_sdk (from `.symlinks/plugins/devcycle_flutter_client_sdk/ios`)
@@ -24,9 +24,9 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   DevCycle: 024d5912ce21eac46cc5e629aaabeec30218b691
-  devcycle_flutter_client_sdk: 53fcd010d9dc6001207e8fed4295dd193893c23a
-  Flutter: e0871f40cf51350855a761d2e70bf5af5b9b5de7
-  LDSwiftEventSource: 3f9ff84ca80677f9a4f8596757dcb50026e4a13c
+  devcycle_flutter_client_sdk: 46359fba96436d333d967fb56a07e24107bc47f3
+  Flutter: f04841e97a9d0b0a8025694d0796dd46242b2854
+  LDSwiftEventSource: b0826ca826ca890609a9833a05cae1f357fd3b99
 
 PODFILE CHECKSUM: 4e8f8b2be68aeea4c0d5beb6ff1e79fface1d048
 

example/ios/Runner.xcodeproj/project.pbxproj

@@ -155,7 +155,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1510;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {

example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1510"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"