Merge pull request #20 from azyobuzin/pull-request

スクリプトが実行できないのを修正
Fix query editor auto-completion bug.
Update auto-updater.

Handle server error and auto-retry.
Explicit describe messages when auto update failed.
Save last window state.

Close #25
Fix forgot saving tabs after creating tabs.

close #21
Fix key assign behavior.

close #24
Increment build.
Fix keay assign behavior.
Increment revision.
Add fallback event when fallbacking.
Fix version check code.
Fix image caching bug.

close #26
Fix drag drop accept behavior.
Implement fallback release time prediction.
increment build.
Fix pinning timeline query error.
Fix generated query contains error when pinning tab.
Fix SQL error on operator * .
Automatically simplify brackets.

Fix and operator generator priority.
Increment build.