unfinished release note work.

To prepare the release notes for a release, run `relnote generate`.
That will merge the `.md` files in `next` into a single file.
Atomically (as close to it as possible) add that file to `_content/doc` directory
of the website repository and remove the `doc/next` directory in this repository.

To begin the next release development cycle, populate the contents of `next`

    FileBackedOutputStream out = new FileBackedOutputStream(0, true);

    write(out, data, 0, 100, true);
    final File file = out.getFile();
    assertEquals(100, file.length());
    assertTrue(file.exists());
    out.close();

    // Make sure that finalize deletes the file
    out = null;

    // times out and throws RuntimeException on failure
    GcFinalization.awaitDone(
        new GcFinalization.FinalizationPredicate() {

                  multiset = multiset.tailMultiset(firstInclusive, BoundType.CLOSED);
                } else if (from == Bound.EXCLUSIVE) {
                  multiset = multiset.tailMultiset(firstExclusive, BoundType.OPEN);
                }

                if (to == Bound.INCLUSIVE) {
                  multiset = multiset.headMultiset(lastInclusive, BoundType.CLOSED);
                } else if (to == Bound.EXCLUSIVE) {

          val param = record.parameters?.firstOrNull() as? String
          debugHandler(JsseDebugMessage(record.message, param))
        }

        override fun flush() {
        }

        override fun close() {
        }
      },
    )
  }

    object : Handler() {
      override fun publish(logRecord: LogRecord) {
        logs += "${logRecord.level}: ${logRecord.message}"
      }

      override fun flush() {
      }

      override fun close() {
      }
    }

  private var previousLevel: Level? = null

  override fun beforeEach(context: ExtensionContext?) {
    previousLevel = logger.level
    logger.addHandler(handler)

        this.data = data;
        this.file = null;
    }

    public ContentCache(final File file) {
        this.data = null;
        this.file = file;
    }

    @Override
    public void close() throws IOException {
        if (file != null) {
            Files.delete(file.toPath());
        }
    }

    public InputStream getInputStream() throws IOException {
        if (file != null) {

        this.lookup = new DefaultLookup(plexusContainer);
    }

    @Override
    public Lookup getLookup() {
        return lookup;
    }

    @Override
    public void close() {
        try {
            plexusContainer.dispose();
        } finally {
            Thread.currentThread().setContextClassLoader(previousClassLoader);
        }
    }

is._config.title))\n    }\n\n    if (this._config.subtitle != null) {\n      toastHeader.append($('<small />').html(this._config.subtitle))\n    }\n\n    if (this._config.close == true) {\n      const toastClose = $('<button data-dismiss=\"toast\" />').attr('type', 'button').addClass('ml-2 mb-1 close').attr('aria-label', 'Close').append('<span aria-hidden=\"true\">&times;</span>')\n\n      if (this._config.title == null) {\n        toastClose.toggleClass('ml-2 ml-auto')\n      }\n\n      toastHe...

                    }
                }
            }
            else {
                Assume.assumeTrue(false);
            }
        }
        finally {
            c.close();
        }
    }

                try {
                    handler.processResource(entryName.substring(pos), is);
                } finally {
                    CloseableUtil.close(is);
                }
            }
        }
    }

    /**
     * ZIPファイル形式の入力ストリームに含まれるリソースをトラバースします。
     *
     * @param zipInputStream