add raise SystemExit
fix exit_code to 1
Merge pull request #49 from item4/cli/upgrade

CLI: fix bug at cliche upgrade
add EnvironmentContext to run command
use app_context
test history on travis
Merge pull request #48 from item4/cli/history

CLI: fix bug at setup.py - history
define Title class and add relationships of it
Test on Title, and stylistic change
add migration script for titles
adjust frontend and test on it for multiple titles
remove old migration script
resolve conflicts
define LocaleType is used as Locale in SQLAlchemy
define orm classes for multiple titles, apply them
non-instantiable class and non-changeable column
work page is now accessed by canonical name
Merge pull request #38 from sjw0687/multiple_titles_for_work

Multiple titles for work
Fix situation where migrations not included in egg
Merge pull request #52 from tkiapril/migration-fix

Fix situation where migrations not included in egg