push version number to 5.0.4
Updating credits

Added: Ben Rafshoon
Updating version notes
Preparing for 5.0.4 release
Bumping install4j to version 5.1.5; auto-signing for Mac
Updating expected cert file location on Mac OS
Adding 'strictfp' and EOF newlines to modeling commons sources
update models submodule
exlude models with dashes from checksums (better fix needed)
Removing dash from MC docs (since they don't show up right in '.pdf's)
Removing erroneous closing tag in MC docs
Merge branch '5.0.x' of github.com:NetLogo/NetLogo into 5.0.x
Updating version numbers in the 'localize' script
models submodule update
update models submodule
Adding some docwords
update models submodule
update models submodule
Merge branch '5.0.x' of github.com:NetLogo/NetLogo into 5.0.x

Conflicts:
	resources/system/version.txt
update models submodule