Sh Diao reported that CURLOPT_CLOSEPOLICY doesn't work, and indeed, there is no code present in the library that receives the option. Since it was not possible to use, we know that no current users exist and thus we simply removed it from the docs and made the code always use the default path of the code. 
diff --git a/RELEASE-NOTES b/RELEASE-NOTES index 4a5f344..9d8d554 100644 --- a/RELEASE-NOTES +++ b/RELEASE-NOTES 
@@ -12,6 +12,7 @@  This release includes the following changes:    o Support for SCP and SFTP were added + o CURLOPT_CLOSEPOLICY is now deprecated    This release includes the following bugfixes: