NLog/NLog 4.2.0 on GitHub

Features

Performance Counter Target: it's now possible to configure the step size for the counter target. Before the step size was always one.
Mail Target: pickupDirectoryLocation and deliveryMethod are configurable from the NLog config.
Cached Layout Renderer: a clearCache option has been added for more control over clearing the cache.
File target: auto add .zip to compressed archive when archiveName isn't specified.

Inner layout can now contain colons.
Colored Console Target: highlight whole words was broken.
Mail Target: when useSystemNetMailSettings was false, some settings were still used from the <mailSettings> of the .Net config.
Removed unnecessary System.Drawing references for Xamarin.
File Target: sometimes an exception was thrown when archiving was enabled.
File Target: file archiving DateAndSequence & FileArchivePeriod.Day won't always work.
GetTargetsByLevelForLogger could throw a "Collection was modified" exception.

In more detail, see news post