Increase Mibew version
Move Stash cache to separated directory
Use Symfony-compatible router
Fix trailing slash removing on installation
Remove unused "escape_with_cdata" function
Move Installer to a separated namespace
Replace INSTALLATION_IN_PROGRESS const with MAINTENANCE_MODE
Use CanteenHTML5 for buttons generation
Add "buttonGenerate" event
Move "format_version_id" func to Maintenance\Utils class
Extract SessionAuthenticationManager
Create Updater
Flush cache on update
Add versions check to plugins
Use versions range in plugin dependencies
Rename Mibew\Plugin\Manager to Mibew\Plugin\PluginManager
Return false from PluginManager::getPlugin for unregistered plugins
Use regular singleton in Mibew\Plugin\PluginManager
Add plugins discovery means
Use more strict policy for plugin names