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Return approximate-time-distance string for two datetimes or ints.
If times are integers, they are interpreted as seconds.
Set ``include_seconds`` to True for more more detailed approximations
when distance < 1 min, 29 secs
Distances are reported based on the following table:
0 <-> 29 secs => less than a minute
30 secs <-> 1 min, 29 secs => 1 minute
1 min, 30 secs <-> 44 mins, 29 secs => [2..44] minutes
44 mins, 30 secs <-> 89 mins, 29 secs => about 1 hour
89 mins, 30 secs <-> 1 day minus 31 secs => about [2..24] hours
1 day minus 30 secs <-> 2 days minus 31 secs => 1 day
2 days minus 30 secs <-> 30 days minus 31 secs => [2..29] days
30 days minus 30 secs <-> 60 days minus 31 secs => about 1 month
60 days minus 30 secs <-> 1 yr minus 31 secs => [2..12] months
1 yr minus 30 secs <-> 2 yrs minus 31 secs => about 1 year
2 yrs minus 30 secs <-> max time or date => over [2..X] years
With ``include_seconds`` set to True and the difference < 1 minute 29
seconds:
0-4 secs => less than 5 seconds
5-9 secs => less than 10 seconds
10-19 secs => less than 20 seconds
20-39 secs => half a minute
40-59 secs => less than a minute
60-89 secs => 1 minute
Examples:
>>> from datetime import datetime, timedelta
>>> from_time = datetime.now()
>>> distance_of_time_in_words(from_time, from_time + timedelta(minutes=50))
'about 1 hour'
>>> distance_of_time_in_words(from_time, from_time + timedelta(seconds=15))
'less than a minute'
>>> distance_of_time_in_words(from_time, from_time + timedelta(seconds=15), include_seconds=True)
'less than 20 seconds'
Note: ``distance_of_time_in_words`` calculates one year as 365.25 days.
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Return approximate-time-distance string for ``from_time`` til now.
See ``distance_of_time_in_words`` -- same here, but ``to_time`` is
fixed to ``datetime.now()``.
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