Crash

```
Thread: main, Exception: java.lang.StringIndexOutOfBoundsException: length=84; index=-1
at java.lang.String.substring(String.java:2057)
at android.text.SpannableStringInternal.(SpannableStringInternal.java:35)
at android.text.SpannableString.(SpannableString.java:48)
at android.text.SpannableString.subSequence(SpannableString.java:68)
at android.text.PrecomputedText.subSequence(PrecomputedText.java:714)
at me.saket.bettermovementmethod.BetterLinkMovementMethod$ClickableSpanWithText.ofSpan(BetterLinkMovementMethod.java:6)
at me.saket.bettermovementmethod.BetterLinkMovementMethod$LongPressTimer.run(BetterLinkMovementMethod.java:8)
at android.os.Handler.handleCallback(Handler.java:914)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7551)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
```