[IMP] - Make one migration from 12.0.1 to 12.0.4

[RMV] - Remove empty file

[IMP] - Update no_update cron after migration

[IMP] - move contract template recurrence info to line level

[FIX] - Fix contract line model description

[IMP] - Link contracts to analytic accounts

[FIX] - Fix pylint

[IMP] - Move chatter and attachments from analytic account to contract

[IMP] - Move account_analytic_id to contract line level

[IMP] - Improve version check in migration script

[IMP] - Move contracts followers from analytic accounts

[ADD] - Add mail.activity.mixin to contract.contract model

remove data drop from migration scripts

[12.0][FIX] - Fix _init_last_date_invoiced

fix flake8

[ADD] - Update contributors list

contract/models/contract.py

@@ -13,7 +13,12 @@ from odoo.tools.translate import _
 
 class ContractContract(models.Model):
     _name = 'contract.contract'
-    _inherit = ['mail.thread', 'contract.abstract.contract']
+    _description = "Contract"
+    _inherit = [
+        'mail.thread',
+        'mail.activity.mixin',
+        'contract.abstract.contract',
+    ]
 
     active = fields.Boolean(
         default=True,
@@ -26,10 +31,6 @@ class ContractContract(models.Model):
         comodel_name='account.analytic.account',
         ondelete='restrict',
     )
-    analytic_account_id = fields.Many2one(
-        string="Analytic account",
-        comodel_name='account.analytic.account',
-    )
     currency_id = fields.Many2one(
         related="company_id.currency_id",
         string="Currency",