Upgrade the game 3: Spaceship

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-Travel mode has arrived! A new gameplay mode has been added with new collectibles!
-Added 16 more planets to the story mode!
-Added 14 new Upgrades
-Added 2 new hangar upgrades: Critical chance and Critical damage
-Increased the maximum level of Fleet speed
-Fixed a bug where some times, after the ending of Special attack the enemies stop spawning
-Improved the grammar in a lot of sentences
-Fixed an error in the achievements for killing enemies
-Improve UI navigation