pairs should always return a _list_ of sequences

[mahrud]

Tiniest inconvenience:

i1 : hashTable pairs {1,2,3}
stdio:1:9:(3): error: expected 1 or 2 arguments

i2 : hashTable toList pairs {1,2,3}

o2 = HashTable{0 => 1}
               1 => 2
               2 => 3

o2 : HashTable

This is tricky to fix without breaking (hashTable, Function, List).

Oddly though, this works:

i1 : hashTable pairs hashTable { 1 => 2, 2 => 3 }

o1 = HashTable{1 => 2}
               2 => 3

o1 : HashTable

So why does pairs return a sequence for lists but a list for hash tables? I will update the title now.

[d-torrance]

This is a super easy fix -- I added a commit to #3617

[mahrud]

I agree that it's easy, I hope it doesn't break anything!