update changelog [skip ci]
introduce starting gemified app, closes #1716
do not force logger setup
do not create tmp and log if project is gemmable
Merge pull request #1737 from padrino/start-gem

introduce starting gemified app, closes #1716
Loosen thor dependency to ~> 0.18

Reduce the risk of dependendy conflicts with other libraries that pull in thor.
Merge pull request #1740 from postmodern/patch-1

Loosen thor dependency to ~> 0.18
Fix a test that was not working well
Update a few stubs for the thor generator

Thor has been using Readline.readline instead of $stdin.gets in this
case
Get rid of an unnecessary test

This test case is an unnecessary, because the generator will abort if model
already exists
Merge pull request #1741 from padrino/fix-thor-test

Fix tests related to the thor generator
Adds additional changes to changelog
Adds one last change to changelog
Update changes for 0.12.3
Bumped version to 0.12.3
Update static content submodule
Fix color support for Windows

We don't need win32console when working with Ruby 2.0 or later.
Because Ruby 2.0(or later) on Windows supports ANSI escape sequences.
Ref: https://bugs.ruby-lang.org/issues/6418
Merge pull request #1744 from tyabe/fix_colorize

Fix color support for Windows
fix regression of #1736, improve test

after #1736 it was not possible to render textareas with safe html content (html tags)
Fixes #1743: Add a padrino-gen generator for creating new Helpers
Also refactored the controller generator to use the new helper gen :)