Post in the latest section are not sorted by date

[yabirgb]

Describe the bug

Post results in the latest section at the index file are not sorted by date

To Reproduce
Steps to reproduce the behavior:

1. Create a couple of markdown files in the content folder and add a header with at least

Title: Post #i 
Date: 13-04-2019

and change to different dates and titles in each file

2. Build the site
3. Order in the latest post section at the index file depends on the names of the files in the content folder and not the date in the headers

Expected behavior
Post should be ordered chronologically

Additional context
To fix this bug the logic on how the post are picked should change. This is done in

https://github.com/yabirgb/arcade/blob/master/arcade/parsing.py#L82

My suggestion would be, since I don't expect to have hundreds and hundreds of posts to use the sorted function of python before doing this. As key for the sorted I would use the date property of the Post class (is a datetime object)

https://github.com/yabirgb/arcade/blob/master/arcade/utils.py#L41

https://docs.python.org/3.5/library/functions.html#sorted

[yabirgb]

Closed by efda5d3