======VPOP3.Base64======
Added in VPOP3 8.7

This function returns a Base64 string encoding of the supplied parameter

  VPOP3.Base64(text)

or

  VPOP3.Base64(byte-array)
  
It can be passed either a text string or a table containing one byte per table-entry (eg as returned from the [[VPOP3.HMAC]] or [[Lua Hash Functions]]

It returns a string containing the Base64 encoding.

If there was an error, it returns a Nil value