Support for .NET 4.7.1 framework

Added support for .NET 4.7.1, targeting 2.x series of Microsoft.Extensions.Configuration framework.

Many thanks to @ghelyar for researching the issue and implementing the new target!

NLog input 1.0.0

New NLog input--many thanks to @snakefoot for this contribution!

EventFlow Core package 1.4.4

Fixes issue 255
Adds support for NLog input

Log4net Input 1.0.1

Addresses issue 257 -- many thanks, @jeremysmith1 !

Log4net input 1.0.0

Many thanks to @jeremysmith1 for implementing this new input!

ETW Input 1.4.1

ProcessID and ProcessName standard properties are now TraceEventProcessID and TraceEventProcessName, respectively, in order to reduce the likelihood of conflicts.

Application Insights input 1.4.1

Adds EventFlowTelemetryProcessorFactory class that simplifies setup when Application Insights input is used with ASP.NET Core applications.

Corresponding documentation was also updated

EventFlow core package 1.4.2

The way property names are de-conflicted is more predictable (sequentially incremented suffix is applied until the name does not conflict)

PerformanceCounter input 1.3.1

Fixes configuration naming issue for PerformanceCounter (#238)

EventSource input 1.4.2

Support for keywords in hexadecimal format
Disables Microsoft-ApplicationInsights-Data EventSource by default (to work around a CLR issue).