Add verbose parameter to functions

[arturomoncadatorres]

I am currently testing the glm algorithm. Particularly, I am validating the output of the dglm function. When it is being run, it prints a lot of information. For example:

DEBUG [18:57:00.948] Initializing... 
INFO  [18:57:00.951]  
INFO  [18:57:00.953] ############################################### 
INFO  [18:57:00.956] # Starting iteration 0 
INFO  [18:57:00.958] ############################################### 
INFO  [18:57:00.960]  
INFO  [18:57:00.963] 0.1 - RPC Node Beta 
DEBUG [18:57:00.966] ** Mocking call to "node_beta" ** 
DEBUG [18:57:00.969] Regular call 
DEBUG [18:57:00.972] there are 3 datasets .. 
...

Usually such output is very useful. However, it would be nice to have an additional parameter verbose that could allow hiding such information. This would be particularly useful when testing, since not all the time I want to see such a long output.

I would suggest that it defaults to True. Such functionality could also be added to all algorithms.