3.0.0

Added:

• Add Service 'id' property and make 'id' property play identity role #117 (f1401martin)
• adding 'id' to block, making 'name' optional, having 'id' play former name-uniqueness role #115 (f1401martin)

Changed:

• updating service version #118 (f1401martin)
• adding id to Service, identifying a Command through 'id' rather than 'name' #116 (f1401martin)