It depends on what you have changed. If you just changed some code then you could just provide the new JS and other core files using an Installer to replace files in a target directory. If you have added new image assets then you may have to include all the image assets again as construct packages them into spritesheets. You probably want a tutorial on how to create an Installer program. Something like this may help: advancedinstaller.com/user-guide/tutorial-simple.html
Images is the only one I'm unsure of, for all other media types you could use the installer to only deliver the new code and core files and the relevant new media files.