New lookup plugin csvreader
Added to the file module the functionality to force conversion hard link and symlink when the force attribute is set to 'yes'
This fixes bugs added as a part of 8665b0638a1d3a70f985126b0f007a26c81273cb

1. if accept_hostkey is false, no matter if the host key is known or not, it will fail.

2. We don't check for the host key in /etc/ssh/ssh_known_hosts

This fixes both of those issues.
Merge pull request #5587 from kormoc/fix_git_check_hostkey_etc

Fixes for git module
Allow float as an argument type in AnsibleModule
Reference --ask-sudo-pass for ansible_sudo_pass

It looks like the description for `ansible_sudo_pass` was copy/pasted from `ansible_ssh_pass` and not fully updated.
Merge pull request #5598 from rwstauner/patch-1

Reference --ask-sudo-pass for ansible_sudo_pass
Merge pull request #5594 from willthames/allow_float_type

Allow float as an argument type in AnsibleModule
Update Google analytics code.
Add quickstart video back into docs nav.
Add implicit and hopefully obvious note to changelog.
Fixes #5469 Refactor sysctl module into object oriented code,
and add a sysctl_set parameter to manage the values in /proc
apt_key module: Case insensitive presence checking

Right now key_present() is case sensitive, only uppercase key IDs work. By using "grep -i", lowercase IDs should work too.
Documentation update to yield example of "WITH GRANT OPTION" which is undocumented previous
zypper_repository: claims to support check_mode, but does not. Fixes GH-5614.
Merge pull request #5613 from Oneiroi/mysql_user_grant_documentation

Documentation update to yield example of "WITH GRANT OPTION" which is undocumented previous
Merge pull request #5604 from dbrgn/devel

apt_key module: Case insensitive presence checking
Merge pull request #5616 from resmo/fix/zypper_repo

zypper_repository: claims to support check_mode, but does not.
Merge pull request #5282 from rhaido/hard_link_fix

file module: Added to the file module the functionality to force conversion hard link...
Merge pull request #4987 from jpmens/lookup-csvfile

New lookup plugin csvreader