Default XHR requests to Content-Type application/json
Don't retry on 404 errors.
Add support for urlSafe base64 encoding.
Add FOAMGMailMessage model and GMailMessageDAO, a full network dao for gmail.
Supports listening for updates.
Update gmailapi demo to use GMailMesageDAO
Don't serialize EqExpr to MQL if one of the args can't go to MQL.
Add some missing parsers to parse2.js
Allow condition to be a function in aif.
Split out serializing "model_": "foo" in JSONUtil into a method that can be overridden to be removed.
Merge branch 'master' of https://github.com/foam-framework/foam