- gitlab updated their MR payload which adds a parent field
for the list of assignees
- this fix update the Assignee struct to add the missing `Email`
and `ID` field
- adds an array of assignees as part of the MR event payload
Closes#101
Position defines a specific location, identified by paths line numbers and
image coordinates, within a specific diff, identified by start, head and
base commit ids.
Text position will have: new_line and old_line
Image position will have: width, height, x, y