Add support for workflow invocations (#42)

* Add `workflows` module that contains the "invoke" and "invoke for
external user" cases already present in the existing TypeScript SDK
* Document the new functionality in the reference doc
* Bump major version (release candidate)

Author: jverce

.fernignore

@@ -4,5 +4,7 @@
 .gitignore
 LICENSE
 
+src/pipedream/__init__.py
 src/pipedream/pipedream.py
 src/pipedream/proxy/client.py
+src/pipedream/workflows/**/*

pyproject.toml

@@ -3,7 +3,7 @@ name = "pipedream"
 
 [tool.poetry]
 name = "pipedream"
-version = "0.3.4"
+version = "1.0rc1"
 description = ""
 readme = "README.md"
 authors = []