sha,message,author_date,committer_date,raw_author,raw_committer,repo,author,committer
0b8c1b0a6da9cb8ac0d28cc90dd783de87554036,"Test for sql_time_limit_ms + sqlite_functions mechanism

Added a unit test for the sql_time_limit_ms option.

To test this, I needed to add a custom SQLite sleep() function. I've added a
simple mechanism to the Datasette class for registering custom functions.

I also had to modify the sqlite_timelimit() function. It makes use of a magic
value, N, which is the number of SQLite virtual machine instructions that
should execute in between calls to my termination decision function.

The value of N was not finely grained enough for my test to work - so I've
added logic that says that if the time limit is less than 50ms, N is set to 1.
This got the tests working.

Refs #95",2017-11-15T02:41:03Z,2017-11-15T02:43:34Z,2946d096d0cdefdc017559e6b57e87658736e843,2946d096d0cdefdc017559e6b57e87658736e843,107914493,9599,9599