read(f, :varname) + readsafely(f, :varname)
Merge pull request #103 from tlycken/patch-1

read(f, :varname) + readsafely(f, :varname)
Fix writing empty tuple parameters to JLD files

I broke this in 244e37184073d0a24e7a6a928c9d07f09e9bebe8
Reinstate global in at-sign load

I accidentally committed their removal in
5c7eb7d88e80085615c39d73b6e433032811ee0c. Removing the global
declarations here doesn't break anything and I think it's generally a
good idea, but it should be discussed before we do it.
Eliminate `has` import warning (fixes #104)