php-http/promise fixed to ~1.2.0

[hellward]

Abstractions Library is fixed to ~1.2.0 while the latest php-http/promise releases are tagged 1.3.x. Is this intentional?
php-http/promise@1.2.1...1.3.1

[uncaught]

Please update - the old library is causing deprecation warnings in our test suite!

[julianschelker]

See #53, i have the same problem.