Filters are not working properly with numeric values inserted as strings

[orweinberger]

When pushing this document

{
    timestamp: null,
    actions: 1,
    campaign_id: "123456"
}

Querying it with a filter works only in the numeric fashion, for example, this will NOT work:

{
   timeframe: "last_30_days",
   metrics: ["actions"], 
   dimensions: ["campaign_id"],
   filter: [['campaign_id','eq','123456']]
}

But this will work:

{
   timeframe: "last_30_days",
   metrics: ["actions"], 
   dimensions: ["campaign_id"],
   filter: [['campaign_id','eq',123456]]
}