Time::Duration::Parse::AsHash is like Time::Duration::Parse except:
- By default it returns a hashref of parsed duration elements instead of number
  of seconds
  There are some circumstances when you want this, e.g. when feeding into
  DateTime::Duration and you want to count for leap seconds.
  To return number of seconds like Time::Duration::Parse, pass a true value as
  the second argument.
- By default seconds are not rounded
  For example: "0.1s" or 100ms will return result { seconds => 0.1 }, and "2.3s"
  will return { seconds => 2.3 }.
  Also, <01:02:03> being recognized as 1h2min3s, 01:02:03.4567 will also be
  recognized as 1h2min3.4567s.
- It recognizes more duration units
  milliseconds (ms), which will be returned in the seconds key, for example
  "400ms" returns { seconds => 0.4 }.
  microseconds. This will also be returned in seconds key.
  nanoseconds (ns). This will also be returned in seconds key.
  decades. This will be returned in years key, for example "1.5 decades" will
  return { years => 15 }.
- It has a lower startup overhead
  By avoiding modules like Carp and Exporter::Lite, even strict and warnings
  (starts up in ~3m vs ~9ms on my computer).