No longer allowing curl to add a default content-type in the adapter layer
Updating changelog entry
Throwing when you attempt to use "stream" requests in parallel
Test ampersand in multipart field value.
Properly encoding multipart/form-data fields that contain special characters. Closes #758
Only calling curl_multi_select when there are active handles

Calling this function on some versions of PHP can cause the select
to select until the specified timeout value (default of 1 second).
Closes #759.
Improved composer travis install
Merge pull request #761 from GrahamCampbell/patch-1

Improved composer travis install
Updated the alias format
Merge pull request #762 from GrahamCampbell/patch-1

Updated the alias format
4.1.7 release
Updated TransactionIterator::rewind() to call the rewind() of the inner iterator.
Merge pull request #765 from jeremeamia/master

Updated TransactionIterator::rewind()
Fixing an issue where setting stream=false raised an exception. Closes #769
Using the content-type to control whether multipart/form-data POSTs are made. Closes #768
4.1.8 release
Merging in default headers case-insensitively. Closes #767
Removing bad docs. Addresses #760
No longer using namespace functions from stream package
Updating to guzzlehttp/streams 2.0