Upgrade to slf4j 1.7.25

March 16th, 2017 - Release of SLF4J 1.7.25

In slf4j-simple module, added a configuration option to enable/disable caching of the System.out/err target. This enhancement was requested in SLF4J-395 by Hervé Boutemy.

Refactored several internal methods in SimpleLogger in order to ease its extension. This enhancement was requested in SLF4J-394 by Hervé Boutemy.

Updates the serialVersionId of BasicMarker in order to ease diagnosis of serialization issues with this class.

February 23rd, 2017 - Release of SLF4J 1.7.24

In its MANIFEST.MF file, the jcl-over-slf4j module now declares exporting org.apache.commons.logging version "1.2" instead of version "1.1.1". Otherwise, no java code has changed. The change was requested in SLF4J-383 reported by Florian Kolbe and only affects OSGi environments.

Fix performance bottleneck in BasicMarker which now uses a CopyOnWriteArray instead of a Vector. This problem was raised in SLF4J-240 by Ralph Goers.

CAL10N is now declared as an optional dependency of slf4j-ext. This fixes SLF4J-369 reported by Matej Spiller-Muys.