OASIS-2517 Release 2.0.0 GA

[kellyroach-optimizely]

OASIS-2517 Release 2.0.0 GA

This pull request would like to merge the "2.0.0-beta1" branch onto the "2.0.x" branch.
As advertised in the CHANGELOG.md
(https://github.com/optimizely/csharp-sdk/blob/2.0.0-beta1/CHANGELOG.md):

This major release of the Optimizely SDK introduces APIs for Feature Management.

New Features

Introduces the IsFeatureEnabled API to determine whether to show a feature to a user or not.

var enabled = OptimizelyClient.IsFeatureEnabled("my_feature_key", "user_1", userAttributes);

You can also get all the enabled features for the user by calling the following method which returns a list of strings representing the feature keys:

var enabledFeatures = OptimizelyClient.GetEnabledFeatures("user_1", userAttributes);

Introduces Feature Variables to configure or parameterize your feature. There are four variable types: Integer, String, Double, Boolean.

var stringVariable = OptimizelyClient.GetFeatureVariableString("my_feature_key", "string_variable_key", "user_1", userAttributes);
var integerVariable = OptimizelyClient.GetFeatureVariableInteger("my_feature_key", "integer_variable_key", "user_1", userAttributes);
var doubleVariable = OptimizelyClient.GetFeatureVariableDouble("my_feature_key", "double_variable_key", "user_1", userAttributes);
var booleanVariable = OptimizelyClient.GetFeatureVariableBoolean("my_feature_key", "boolean_variable_key", "user_1", userAttributes);

The "2.0.0" *.nupkg has been uploaded to NUGET.ORG .