Better check on the incoming Count value.  Fixes #12.  Thanks @mowaterfowl
Moved a variable to prevent a PHP notice on RETS 1.7+ servers that don't give a TimezoneOffset value.  Fixes #18.  Thanks @CDyWeb
Added LIBXML_PARSEHUGE to simple XML parsing of large XML payloads
Change build query parameters to force literal '&'

On some systems php generated an html-encoded & ('&amp;') in request URLs.
This caused some RETS systems to throw miscellaneous error 20513 in
response.
Merge pull request #21 from zxaos/master

Change build query parameters to force literal '&'
Added some badges
Reset LastRequest information after every request.  For #26
Merge commit 'fe9ac8d7cd99dcd58e420088b5eaff1b59f4f4b3'

Update PHRETS