It's "February 20, 2013" or "20 February 2013", not "February 20 2013".
The change is to the former.

* ks/type-doc-cleanup/OTP-10850:
  Add support for printing <<_:_*1>> as bitstring()
  Clean up of documentation of type language

Added: binary_to_integer/1,2, integer_to_binary/1,2

Prompted by noticing that the type language description was a bit vague
in its explanation of the syntax and semantics of bitstring types,
I decided to add this information.  While at it, a general clean up and
rephrasing was performed.  The binary() type is now described as an alias,
as it should be, and a bitstring() type is also described as a built-in
alias.

The code related to the introduction of unicode_string() and
unicode_char() has been removed. The types char() and string() have
been extended to include Unicode characters.

In fact char() was changed some time ago; this commit is about
cleaning up the documentation and introduce better names for some
functions.

Expect modifications, additions and corrections.

There is a kludge in file_io_server and
erl_scan:continuation_location() that's not so pleasing.