Fix run at "relatize_date" inaccuracy

[litenup]

Addresses issue #69
The run at time in word is not accurate, this fixes the minor logic issue in relatize_date script.

[andyatkinson]

@litenup Sorry this languished for so long. Did you consider "fixing" this by pulling in the same/a similar relatize date script from an external source? (Where presumably a similar fix was already made). This struck me as something that could be externalized. On the other hand, if this file was already in here, we could move forward with your change. Did you conduct some manual testing on it? JS unit tests for this type of file would be nice, but in lieu of that, if you feel good this isn't going to break things, we should merge it.

[litenup]

@andyatkinson no worries
I checked external sources and there's no future date support, the future date support was implemented by @ferlatte earlier and might be unique to this project.

I conducted manual test and it doesn't break anything. Feel good it can be merged.

[andyatkinson]

@litenup Thanks for the feedback. I'll merge it this week. We can also cut a new gem release. I'll ping you when that happens. Would appreciate additional help testing the new gem version as I'm not using this anymore myself.