PM> Install-Package ConfigureAwait.Fody

using Fody;

[ConfigureAwait(false)]
public class MyAsyncLibrary
{
    public async Task MyMethodAsync()
    {
    	await Task.Delay(10);
    	await Task.Delay(20);
    }

	public async Task AnotherMethodAsync()
    {
    	await Task.Delay(30);
    }
}

public class MyAsyncLibrary
{
    public async Task MyMethodAsync()
    {
    	await Task.Delay(10).ConfigureAwait(false);
		await Task.Delay(20).ConfigureAwait(false);
    }

	public async Task AnotherMethodAsync()
    {
    	await Task.Delay(30).ConfigureAwait(false);
    }
}