show and log error with stacktrace
The configuration file of Eclipse is added to gitignore.
The optimization processing is separated from the update processing.
And, optimization API is added. 
'entry-markread' is added in the entry list. 
'exclusion_filter' is added.
The error by entering only one double quotes was fixed.
.bk*. was added.
Revert "The error by entering only one double quotes was fixed."

This reverts commit 6cd64ae29457653e93ca48727d2cc401fe73395a.
Html tag is corrected.
"mark-these-read" is deleted.
README.md of shomyo was added.
PHP end tag is deleted.
The application name is changed. 
The signature is added to the modification file.
URI (aruo.net) is corrected.
'**/.memo', '/.local' was added.
Merged with selfoss Version 2.12.
Logo was changed.
Default settings were changed.
'nav-mobile-filter' of item was added.
'nav-mobile-filter' of item was added. (Additional)
js code was cleaned.
Link to homepage was added to the logo.