Added support for compiling to framework versions v4.0 and v4.5
Added rakefile support for building framework specific versions
Added the ability to redefine how the delay is calculated between service calls that fail.
IRetryingProxyConfigurator has a new method SetDelayPolicy that configures method for calculating the delay.
The TimeBetweenRetries method on IRetryingProxyConfigurator has been removed in favor of SetDelayPolicy.
Incrementing version
Merge branch 'develop'