update ant-javacard and jc-sdk

.gitignore

@@ -1,3 +1,5 @@
 .gradle
 build/**
 */build
+
+ext/ant-javacard/

.gitmodules

@@ -1,10 +1,6 @@
-[submodule "ext/ant-javacard"]
-	path = ext/ant-javacard
-	url = https://github.com/promovicz/ant-javacard.git
-	branch = master
 [submodule "ext/javacard-sdks"]
 	path = ext/javacard-sdks
 	url = https://github.com/martinpaljak/oracle_javacard_sdks.git
 [submodule "ext/globalplatform-exports"]
 	path = ext/globalplatform-exports
-	url = https://github.com/OpenJavaCard/globalplatform-exports.git
+	url = https://github.com/OpenJavaCard/globalplatform-exports.git

build.xml

@@ -8,25 +8,27 @@
     <property name="ext.ant-javacard" value="ext/ant-javacard"/>
 
     <property name="sdk.globalplatform" value="ext/globalplatform-exports"/>
-    <property name="sdk.jc222" value="ext/javacard-sdks/jc222_kit"/>
+    <property name="sdk.jc" value="ext/javacard-sdks/jc310r20210706_kit"/>
 
     <!-- Cleanup target -->
     <target name="clean" description="Delete build output">
         <delete dir="build"/>
+        <delete dir="ext/ant-javacard"/>
     </target>
 
     <!-- Prepare build tools and directories -->
     <target name="prepare" description="Prepare build">
-        <ant dir="ext/ant-javacard"/>
-        <taskdef name="javacard"
-                 classpath="${ext.ant-javacard}/ant-javacard.jar"
-                 classname="pro.javacard.ant.JavaCard"/>
-
         <mkdir dir="build/javacard"/>
         <mkdir dir="build/classes/advanced"/>
         <mkdir dir="build/classes/full"/>
         <mkdir dir="build/classes/stub"/>
         <mkdir dir="build/classes/tiny"/>
+        <mkdir dir="ext/ant-javacard"/>
+
+        <get src="https://github.com/martinpaljak/ant-javacard/releases/latest/download/ant-javacard.jar" dest="ext/ant-javacard/ant-javacard.jar" skipexisting="true"/>
+        <taskdef name="javacard"
+                 classpath="${ext.ant-javacard}/ant-javacard.jar"
+                 classname="pro.javacard.ant.JavaCard"/>
     </target>
 
     <!-- Build-all target -->
@@ -51,7 +53,7 @@
     </target>
 
     <target name="build-advanced">
-        <javacard jckit="${sdk.jc222}">
+        <javacard jckit="${sdk.jc}">
             <cap output="build/javacard/openjavacard-ndef-advanced.cap"
                  jar="build/javacard/openjavacard-ndef-advanced.jar"
                  classes="build/classes/advanced"
@@ -67,7 +69,7 @@
     </target>
 
     <target name="build-full">
-        <javacard jckit="${sdk.jc222}">
+        <javacard jckit="${sdk.jc}">
             <cap output="build/javacard/openjavacard-ndef-full.cap"
                  jar="build/javacard/openjavacard-ndef-full.jar"
                  classes="build/classes/full"
@@ -81,7 +83,7 @@
     </target>
 
     <target name="build-tiny">
-        <javacard jckit="${sdk.jc222}">
+        <javacard jckit="${sdk.jc}">
             <cap output="build/javacard/openjavacard-ndef-tiny.cap"
                  jar="build/javacard/openjavacard-ndef-tiny.jar"
                  classes="build/classes/tiny"
@@ -95,7 +97,7 @@
     </target>
 
     <target name="build-stub">
-        <javacard jckit="${sdk.jc222}">
+        <javacard jckit="${sdk.jc}">
             <cap output="build/javacard/openjavacard-ndef-stub.cap"
                  jar="build/javacard/openjavacard-ndef-stub.jar"
                  classes="build/classes/stub"