title: PocketSphinx on Android setKeywordThreshold() issue
body: <p>I would like to lower the threshold via setKeywordThreshold() method.
  The default value of this in the official demo app is 1e-45.
  I was told that the minimal value could be 1e-200.
  See this article: <a href="https://sourceforge.net/p/cmusphinx/discussion/help/thread/05d09693/?limit=25" rel="nofollow">https://sourceforge.net/p/cmusphinx/discussion/help/thread/05d09693/?limit=25</a></p>
  
  <p>So, I tried to set it to be 1e-150,  but the Android Studio complained that the threshold value should be in type "float", not "double".</p>
  
  <p>Can anybody tell me how to set it up to lower than 1e-45?
  Thanks!</p>