Description: (Describe migration here.)
Created: 2016-10-14 02:11:28.829909 UTC
Depends: 2016-10-13_05-36-55_user-event-log
Apply: |
  alter table projects add depreciation_fn json not null default '{"type": "LinearDepreciation", "arguments": {"undep": 6, "dep": 60}}';

  alter table project_companions add invited_by uuid references users(id);
  update project_companions set invited_by = user_id; --
  alter table project_companions alter column invited_by set not null;

  alter table project_companions 
  add joined_at timestamp with time zone not null 
  default (now() at time zone 'UTC');

Revert: |
  alter table projects drop column depreciation_fn;
  alter table project_companions drop column invited_by;
  alter table project_companions drop column joined_at;