Send paths as base64 strings
Vendor JS base64 library
File explorer: base64 decode directory names
Separate v1 and v2 API versions
models: remove unused base64 calls
Move v1 and v2 classes into separate modules
Resources: add versioning note
v1 and v2 APIs: make sure to set up fields

Since these are properties on the classes, inheritance doesn't
bring them in.