add .htaccess
correct spelling errors
fix bug in rigForceDownload handler

Now rigForceDownload respects rigFetchMimeType() (in system/application/config/mimes.lc) returning FALSE.
add hint on how to search for empty fields
add link to upgrade section of the User Guide
add the ability to handle compressed and uncompressed LiveCode arrays as well as JSON data

For this to work the following headers must be sent along with the POST data: "Content-Type: application/lc.array" or "Content-Type: application/lc.array.compressed" respectively for LiveCode arrays, "Content-Type: application/json" for JSON. Use urlEncode(arrayEncode(myArray)) or base64Encode(compress(arrayEncode(myArray))) to prepare arrays on the client side. JSON data on the server side can be retrieved from $_POST and from $_POST_RAW as well as from rigVarPost() or from rigVarPost(, TRUE) respectively.
fix return type in description of rigXssCleanArray() and rigSerializedPOSTtoArray()
add instructions for dealing with LiveCode arrays as well as JSON in POST data
update User Guide considering all framework modifications for the next release and change User Guide version number
change version number
Merge branch 'release/1.6.4'