Support diffing Bytecode versions

[Goooler]

OLD: diffuse-0.2.0-SNAPSHOT-binary-java11.jar
NEW: diffuse-0.2.0-SNAPSHOT-binary-java16.jar

 JAR   │ old │ new │ diff
───────┼─────┼─────┼──────
 class │ 0 B │ 0 B │  0 B
 other │ 0 B │ 0 B │  0 B
───────┼─────┼─────┼──────
 total │ 0 B │ 0 B │  0 B


 CLASSES │ old │ new │ diff
─────────┼─────┼─────┼───────────
 classes │   0 │   0 │ 0 (+0 -0)
 methods │   0 │   0 │ 0 (+0 -0)
  fields │   0 │   0 │ 0 (+0 -0)

Fixture: diff-jars.zip

Ref: https://javaalmanac.io/bytecode/versions

[Goooler]

./diffuse diff --jar diffuse-0.2.0-SNAPSHOT-java11.jar diffuse-0.2.0-SNAPSHOT-java16.jar
Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't obtain static method dispose from class com.sun.jna.Native
	at com.sun.jna.Native.initIDs(Native Method)
	at com.sun.jna.Native.<clinit>(SourceFile:248)
	at com.github.ajalt.mordant.internal.MacosMppImpls.<init>(SourceFile:46)
	at com.github.ajalt.mordant.internal.MppImplKt.<clinit>(SourceFile:98)
	at com.github.ajalt.mordant.terminal.TerminalDetection.detectTerminal(SourceFile:143)
	at com.github.ajalt.mordant.terminal.StdoutTerminalInterface.<init>(SourceFile:17)
	at com.github.ajalt.mordant.terminal.Terminal.<init>(SourceFile:56)
	at com.github.ajalt.mordant.terminal.Terminal.<init>(SourceFile:45)
	at com.github.ajalt.clikt.core.Context$Builder.<init>(SourceFile:227)
	at com.github.ajalt.clikt.core.CliktCommand.createContext(SourceFile:312)
	at com.github.ajalt.clikt.core.CliktCommand.parse$default(SourceFile:456)
	at com.jakewharton.diffuse.Diffuse.main(SourceFile:475)

[Goooler]

OLD: diffuse-0.2.0-SNAPSHOT-r8-java11.jar
 (bytecodeVersion: 55)
NEW: diffuse-0.2.0-SNAPSHOT-r8-java16.jar
 (bytecodeVersion: 55)

 JAR   │ old      │ new      │ diff
───────┼──────────┼──────────┼──────
 class │ -1.7 KiB │ -1.7 KiB │  0 B
 other │    -43 B │    -43 B │  0 B
───────┼──────────┼──────────┼──────
 total │ -1.8 KiB │ -1.8 KiB │  0 B

 CLASSES │ old  │ new  │ diff
─────────┼──────┼──────┼───────────
 classes │ 1784 │ 1784 │ 0 (+0 -0)
 methods │ 9824 │ 9824 │ 0 (+1 -1)
  fields │ 4326 │ 4326 │ 0 (+1 -1)

=====================
====   CLASSES   ====
=====================

METHODS:

   old  │ new  │ diff
  ──────┼──────┼───────────
   9824 │ 9824 │ 0 (+1 -1)
  + com.jakewharton.diffuse.format.Jar <init>(String, Short, ArchiveFiles, ArrayList, List, List)

  - com.jakewharton.diffuse.format.Jar <init>(String, short, ArchiveFiles, ArrayList, List, List)


FIELDS:

   old  │ new  │ diff
  ──────┼──────┼───────────
   4326 │ 4326 │ 0 (+1 -1)
  + com.jakewharton.diffuse.format.Jar bytecodeVersion: Short

  - com.jakewharton.diffuse.format.Jar bytecodeVersion: short

[Goooler]

OLD: diffuse-0.2.0-SNAPSHOT-java11.jar (bytecodeVersion: 55)
NEW: diffuse-0.2.0-SNAPSHOT-java16.jar (bytecodeVersion: 60)

 JAR   │ old      │ new      │ diff
───────┼──────────┼──────────┼──────
 class │ 90.6 KiB │ 90.6 KiB │  0 B
 other │     96 B │     96 B │  0 B
───────┼──────────┼──────────┼──────
 total │ 90.7 KiB │ 90.7 KiB │  0 B

 CLASSES │ old │ new │ diff
─────────┼─────┼─────┼───────────
 classes │  24 │  24 │ 0 (+0 -0)
 methods │ 234 │ 234 │ 0 (+0 -0)
  fields │  78 │  78 │ 0 (+0 -0)

=================
====   JAR   ====
=================

 size │ diff │ path
──────┼──────┼─────────
  0 B │  0 B │ (total)