Add profiling to squash

Running the window test locally gives the following:

```
filter:adult|9|4|92000|6000
filter:age|9|4|12000|2000
halibut:cooldown|3|4|3000|2000
halibut:latte|6|4|10000|10000
halibut:swiss_cheese|7|4|22000|6000
```