v2.3.7 includes new functionality that adds progress bars for twarc2 commands like search, hydrate, timeline and more. These visual indications of how much data has been collected and how much there is to go are extremely useful in data collection jobs. Progress bars display by default when you instruct twarc to write output to a file (490).
![twarc-progressbar](https://user-images.githubusercontent.com/33829/124528558-77591a00-ddd6-11eb-989b-09b4e413cfef.gif)
Additionally there is new code to catch 503 Twitter API errors that have recently been occurring much more regularly (499). Apparently a big reason for these errors was the load that requesting 500 tweets from the search/all endpoint while also asking for context annotations. Twitter recently announced they were no longer making context annotations available for requests asking for more than 100 tweets. Since it's one of twarc's design principles to maximize the representation of tweets the search command has been adjusted to default to 100 now instead of 500, at least for the time being (504).