* TWEAK: Add admin notice for DISABLE_WP_CRON constant and remove notices regarding WP_AUTO_UPDATE_CORE and AUTOMATIC_UPDATER_DISABLED constants as they now won't prevent automatic updates from being run

* FIX: Core minor updates became major when two updates-related scheduled events got triggered in the same process

* FIX: In some cases the serialisation of call stack could cause a PHP fatal error due to the output of a backtrace (debug_backtrace) containing 'Closure' (anonymous) functions

* TWEAK: Update notice class

* TWEAK: Update logs are sent separately causing a huge number of emails being sent to the user (Premium)

* TWEAK: Override potential constants and filters that might be used by other plugins for disabling WordPress automatic updater

* TWEAK: Prevent other plugins from overriding the 'auto_update_core' filter when 'Manually update' or 'Auto update all minor versions' core setting is selected

* FIX: The logs option/setting got stuck in 'off' value when upgrading from old versions (prior to 8.1.0) to the recent versions

* FIX: When plugin notification emails setting is disabled but core notification setting is enabled, the user would still receive a notification email regarding plugin updates

* FIX: Redundant emails were sent when core notification setting is enabled

* TWEAK: Improve the notification settings by adding two new options for enabling/disabling theme and translation notification emails

* FIX: In any update operation (manual or automatic), translation update was automatically triggered when 'Manually update' or 'Disable auto updates' is chosen

* TWEAK: Remove 'Disable auto updates' setting as it's the same as 'Manually update'

* FIX: '0.00' version numbers were logged when upgrading plugins and/or theme, at the same time the information about core update wasn't presented in the logs table, some warnings and WordPress database errors were logged in the PHP error log file too

* FIX: Users with very limited access were recorded in the logs table

* FIX: Failure status was recorded in the log entry and the 'From' and 'To' versions are in the same version number, though the update process was successful

* FIX: Unneeded and misleading log entry when upgrading to minor versions

* FIX: Incorrect WordPress version number was logged after upgrading to a minor version

* TWEAK: Refactor Log classes to improve how log reporting is handled during updates

* TWEAK: Update seasonal notices

* FEATURE: Semantic versioning feature that when enabled it will allow only patch/security release updates for plugins and/or themes

* FIX: The log table didn't get updated when upgrading from the very old table versions (1.0.0 and 1.1.3) to the current latest (1.1.5)

* FIX: Change the order (priority) of auto_update_plugin/theme filters to make the 'Safe Mode' feature (Premium) work properly

* TWEAK: Improve the way errors are handled before and after a plugin activation takes place (deactivated plugins must be reactivated immediately regardless of whether or not the plugins contain a fatal error)

* TWEAK: Change use of '$' to local/function scope, to prevent conflicts