server behaviour when ambiguous.

# Basic Usage

```kotlin
  private val client: OkHttpClient = OkHttpClient.Builder()
      .cache(Cache(
          directory = File(application.cacheDir, "http_cache"),
          // $0.05 worth of phone storage in 2020
          maxSize = 50L * 1024L * 1024L // 50 MiB
      ))
      .build()
```

## EventListener events 

    }

    /**
     * Test adding a single exclude pattern
     */
    public void test_addExclude_singlePattern() {
        String sessionId = "test-session-005";
        urlFilter.init(sessionId);

        urlFilter.addExclude(".*\\.(jpg|png|gif)$");

        assertTrue(urlFilter.match("https://example.com/page.html"));

  * Bootstrap reworked to be more similar to GCE; better supports reboots/restarts
  * Use an elastic IP for the master by default
  * Experimental support for node spot instances (set NODE\_SPOT\_PRICE=0.05)

#### GCE

  * Ubuntu Trusty support added

     * The value is, e.g. 0.05 <br>
     * comment: Boost value for content field in queries.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getQueryBoostContent();

    /**
     * Get the value for the key 'query.boost.content' as {@link java.math.BigDecimal}. <br>
     * The value is, e.g. 0.05 <br>

# Boost value for title field in queries.
query.boost.title=0.5
# Boost value for title field with language in queries.
query.boost.title.lang=1.0
# Boost value for content field in queries.
query.boost.content=0.05
# Boost value for content field with language in queries.
query.boost.content.lang=0.1
# Boost value for important content field in queries.
query.boost.important_content=-1.0