Reset command chaining + extended length to 0x80

Turns out that this does not work on the omni-ring, despite documention saying it should

.gitignore

@@ -1,2 +1,4 @@
 *.jar
 *.cap
+*/.venv/*
+*.pyc

src/dev/c0de/smartpgp/Constants.java

@@ -150,9 +150,9 @@ public final class Constants {
         (byte)0xC0, /* 1st byte: "methods supported" see ISO 7816-4 */
         (byte)0x01, /* 2nd byte: "data coding byte" idem */
 
-        /* 3rd byte: command chaining + extended length; Set to 0x80 if
-                     extended length is not supported by card or reader */
-        (byte)0xC0,
+        /* 3rd byte: command chaining + extended length; Set to 0xC0 if
+                     extended length is supported by card and reader */
+        (byte)0x80,
 
         (byte)0x05, /* status indicator byte : operational state */
         (byte)0x90, /* SW1 */