Prevent make_from_array using Chronic, fixes gh-28
Prevent make_from_array using Chronic, fixes gh-28

```
before:
063204 我 castor ダ ~/t/chronic (master|+2…) > bxr t.rb
  0.763248   0.004234   0.767482 (  0.767854)
107.335412   0.725867 108.061279 (108.092112)
after:
063443 我 castor ダ ~/t/chronic (master|+2…) > bxr t.rb
  0.743245   0.003506   0.746751 (  0.747145)
 18.010423   0.085851  18.096274 ( 18.104008)
```

floraison/et-orbi