Export-ignore github and editor config; remove leftover excludes

Author: kaznovac

.gitattributes

@@ -1,11 +1,11 @@
 *.php text eol=lf
 
+.github export-ignore
 tests export-ignore
 tmp export-ignore
-.coveralls.yml export-ignore
+.editorconfig export-ignore
 .gitattributes export-ignore
 .gitignore export-ignore
-.travis.yml export-ignore
 Makefile export-ignore
 phpstan.neon export-ignore
 phpstan-baseline.neon export-ignore