composer backdrop 1.13.2 reports to be 1.14.x-dev

[tabroughton]

Description of the bug
installing backdrop through composer ans specifying the version to be 1.13.2-rc2 (@serundeputy tells me this is the released version, the rc2 was a packagist issue). When checking with drush status it reports to be 1.14.x-dev

Steps To Reproduce
To reproduce the behavior:
steps are long to replicate but composer users should know what steps I'm taking, roughly:

1. create composer.json (see additional info below)
2. composer install
3. copy vendor/backdrop/bacdrop to webroot
4. copy vendor/backdrop/drush to .drush/commands
5. install backdrop manually
6. run ./vendor/bin/drush cc drush --root=webroot
7. run ./vendor/bin/drush st --root=webroot

Actual behavior

Backdrop version         :  1.14.x-dev                            
 Site URI                 :  http://default                        
 Database driver          :  mysql                                 
 Database hostname        :  backdrop_db_server                    
 Database port            :  3306                                  
 Database username        :  backdropuser                          
 Database name            :  backdrop_db                           
 Backdrop bootstrap       :  Successful                            
 Backdrop user            :                                        
 PHP executable           :  /usr/local/bin/php                    
 PHP configuration        :                                        
 PHP OS                   :  Linux                                 
 Drush script             :  /var/www/vendor/drush/drush/drush.php 
 Drush version            :  8.3.0                                 
 Backdrop Drush           :  1.0.0                                 
 Drush temp directory     :  /tmp                                  
 Drush configuration      :                                        
 Drush alias files        :                                        
 Install profile          :  standard                              
 Backdrop Settings File   :  ./settings.php 

Expected behavior

Backdrop version         :  1.13.2
...

Additional information

composer.json

{                                                                                                                                          
    "name": "backdrop-docker/backdrop",                                                                                                    
    "description": "Run Backdrop using Docker containers.",                                                                                
    "require": {                                                                                                                           
        "backdrop/backdrop": "1.13.2-rc2",                                                                                                 
        "backdrop/drush": "1.0.0",                                                                                                         
        "drush/drush": "8.3.0"                                                                                                             
    }                                                                                                                                      
}