Adding count property to queryiterator

[connorjburton]

Ticket: #837
Reviewer: @jarednova

Issue

If you have a Timber\QueryIterator object, there is no way to get the total posts returned, for example of a search results page with the default posts object in context.

Solution

Add a method to return the private _query.post_count property

Impact

No impact

Usage

{{ QueryIteratorObject.post_count }}

Considerations

There may be other properties that would be useful to expose. Also I am not sure on the reason behind returning a QueryIterator rather than a collection of Timber\Posts, you could then do {{ posts | length }} to get the total posts

Testing

None

[coveralls]

Coverage decreased (-0.03%) to 88.212% when pulling 10a510b on cjb-iterator-count into 788919d on master.

[jarednova]

Thanks @connorjburton — @lggorman, could you write a test to cover the new code?

[coveralls]

Coverage decreased (-0.03%) to 88.223% when pulling 36331b0 on cjb-iterator-count into 8034b50 on master.

[lggorman]

@jarednova sure thing

[coveralls]

Coverage decreased (-0.03%) to 88.223% when pulling 79d89c4 on cjb-iterator-count into 8034b50 on master.

[coveralls]

Coverage increased (+0.004%) to 88.223% when pulling 29dca3f on cjb-iterator-count into 0d21885 on master.