Handling whitespace when matching relative dates

This is for version dateparser==1.0.0.
I've noticed that for some of the dates I tried to parse I need to add spaces to make parsing work and for some I need to remove them.
It seems a bit random and I am guessing it depends on how the string was added to date_translation_data.
That doesn't seem very flexible or reliable, and I wonder if it would make sense to either remove all whitespace from both input data and date_translation_data before matching, or make them optional.

Examples

• 2 minutes ago in Mandarin

>>> dateparser.parse("2分鐘前")
>>> dateparser.parse("2 分鐘前")                  -> works only if you add space between the number and symbol
datetime.datetime(2021, 4, 28, 20, 45, 19, 266428)

• 2 months ago in Thai

>>> dateparser.parse("2 เดือน ที่ผ่านมา")            -> doesn't work with space between months and ago
>>> dateparser.parse("2 เดือนที่ผ่านมา")             -> works when you remove space between months and ago
datetime.datetime(2021, 2, 28, 22, 3, 40, 264496)
>>> dateparser.parse("2เดือนที่ผ่านมา")              -> doesn't work when you remove all spaces

Start by reproducing the Mandarin and Thai examples with dateparser.parse, then inspect how whitespace in date_translation_data is matched. Done means the shown variants parse consistently without manually adding or removing spaces, with coverage for the reported examples.