Merge pull request #11 from NLog/v2maintenance

Updated code to not log exception double times
Merge branch 'v2maintenance' into upstreammaster
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Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance' into upstreammaster
Merge branch 'v2maintenance'
Merge branch 'v2maintenance'
Merge branch 'v2maintenance'
Merge branch 'v2maintenance'
Merge branch 'v2maintenance'