public / sequelize

[ci skip] added missing space in docs/instances.md

No functional change,remove a comma

just remove a comma.for some IDE alerts

Update associations.md

…kerdev-patch-issue-3279

$not fix.

$not tests

$not: null test

$not fix v2

fixed confusing use of !

fix confusing use of !

typeof value.$not

some nesting errors.

changed else if nesting (semantics issue)

setup a separate if block for $not normalisation.

comment changes. if value short circuit.

Change roadmap URL

Show more appropriate error message for model validation error

Before:
Possibly unhandled SequelizeValidationError: Validation error
    at /home/phanect/dev/notel-api/node_modules/sequelize/lib/instance-validator.js:150:14
    ...

After:
Possibly unhandled SequelizeValidationError: field_name cannot be null
    at /home/phanect/dev/notel-api/node_modules/sequelize/lib/instance-validator.js:150:14
    ...

[ci skip] Updating docs to reflect actual bulk delete

fix tedious error handling

The previous commit incorrectly invalidated the connection, when we
should really be removing the connection from the pool completely.
This also fixes an error in the disconnect logic, which was erroneously
checking connection.connected to identify an already disconnected
connection.

prevent tedious errors from taking down app