Recent changes to 6: Introduce slf4j logging API

Recent changes to 6: Introduce slf4j logging APIhttps://sourceforge.net/p/javaocr/bugs/6/2015-08-02T15:18:49.473000ZRecent changes to 6: Introduce slf4j logging APIIntroduce slf4j logging API2015-08-02T15:18:49.473000Z2015-08-02T15:18:49.473000ZKalle Richterhttps://sourceforge.net/u/krichter722/https://sourceforge.netfaeabfebea85e19c22f81cbb35e5adbe3f910d4a

<div class="markdown_content"><p>Interested in changing the logging (currently <code>System.[out/err]</code> and <code>java.util.logging</code>) to <code>slf4j</code> API with <code>logback-classic</code> backend? I could start/do the work and submit a merge request.</p></div>