0.18.7: Welcome WordPress 4.5

* Upgrade autotests

0.18.6: Add result's page extension point and PHP7 support

* Add `wp_testing_passer_before_render` extension point
* Add PHP 7.0 support and leave only edge cases in tests

0.18.5: Fix donate link and update WP tests to 4.4.2

* Thanks to new PayPal.Me service

There is nothing new in this hotfix.

0.18.4: Improve results saving under high concurrent load

* Avoid MySQL errors like `Deadlock found when trying to get lock; try restarting transaction`
* Issue solved by catching such errors and restarting save as recommended at [MySQL :: How to Cope with Deadlocks](http://dev.mysql.com/doc/refman/5.7/en/innodb-deadlocks.html)

You should upgrade only if your site is popular and you've heard of some strange "white screens of death" when respondents are posting their results on last step before redirecting to result pages.

Just opening result page many times will not result in any errors.
Especially if you have some cache plugin, that already transformed result page into static page and DB is not touched at all.

For reporting and sponsoring this issue thanks to [Johan](http://www.personalityperfect.com/)

0.18.3: Improve modern themes compat, upgrade WP compat and addons extension …

…points

* Switch to more independent unique identifiers generating lib to avoid theme compatibility issues
* Check WordPress 4.4.1 compatibility
* Add more extension points for addons in settings and results managing (related to pdf addon)

0.18.2: Welcome WordPress 4.4

* Upgrade autotests
* Update screenshots

0.18.1: Add "equals to" button into formula comparisions

* Improve external addons intergation

0.18: Really-multisite, menu for non-admins and migration fault tolerance

Plugin now really multisite-compatible

* When "Network Activate" is used — database updated for all sites
* When new site created, it's database also updated

Correctly add menu page under non-admin

* Respect user role when adding menu
* Rename page title to "My Test Results"

Improve migration fault tolerance when WordPress tables has different table types

* Normally you should have only single table type (name if format, engine): MyISAM or InnoDB
* But there are cases when you have "damaged" or "optimized" database and table types differs
* Now database migration takes this into account. It's critical only for new users when they can't activate plugin
* Thanks to paid support — this issue was catched during it

0.17.2: Internal improvements and intro-video

Add intro-video with plugin description, howto concepts and explanations: http://www.youtube.com/watch?v=tT3d8Jdm7kY

Internal improvements:

* Improve code quality and avoid duplicates
* Improve test rendering

0.17.1: Fix incorrect content processing

Symptoms:

* The questions on the first page of the test dissapear
* Shortcodes don't work on result page

Upgrade notice:

* If you use version 0.17 upgrade to this version!
* Please check first pages of all tests, that use shortcodes in them
* Also please check  result pages, which could have shortcodes inside.
It's ok just  to open at least one existing page. Shortcodes could be in results or scales descriptions.

I apologize for the inconvenience.