Describe the bug
As stated in the documentation (operator inDateRange) "If only one date specified the filter would be set exactly to this date".
Instead, it seems to consider the only date provided as a lower bound.

To Reproduce

{
  member: "Posts.time",
  operator: "inDateRange",
  values: ['2015-01-01']
}

Expected behavior
Same as

{
  member: "Posts.time",
  operator: "inDateRange",
  values: ['2015-01-01', '2015-01-01']
}

or

{
  member: "Posts.time",
  operator: "equals",
  values: ['2015-01-01']
}

Version:
0.26.77