Add log method to sequelize
Use new log method
Use the custom logging function if defined
Allow passing of winston options
Add centralized logging
Use the info event for common loggings
Revert "Use the info event for common loggings"

This reverts commit 85dfa296e0e54f2161854b8560777d3440d59016.
Don't depend on winston
Remove references to winston
Formatting
Recovered previously implemented behavior
Test for #1614
Eager Loading of non required but conditionable

Fixes #1614
Trying to fix fails with Postgres
Merge pull request #1615 from cusspvz/master

Test for #1614
Cleaning unneeded stuff
Cleaning all tests

* all:
  * Removed non used variables.
* test/dao/values.test.js:
  * Changed some lines to dot notation since we aren’t getting from
variables.
Merge pull request #1623 from cusspvz/master

Cleaning unneeded stuff
Merge branch 'master' into feature/logging

Conflicts:
	changelog.md
	lib/dialects/postgres/query.js
Fix the tests