Feature Request: Retrieve Tasks with Customized Filters

[AnyonicFugue]

Hi! Customized filters would allow me to retrieve tasks due today in a certain project, which is a great convenience. I guess many would find filters useful in various ways :)

By the way, Todoist supports filters in restful APIs. https://developer.todoist.com/rest/v2/#get-active-tasks

Thanks in advance!

[benjypng]

Available in latest release. See #67 (comment).