Merge pull request #127 from yktsr/125-fix-plugin-command-mz

Merge pull request #124 from yktsr/123-fix-a-bug-related-to-picture-p…

…ositioning

123 fix a bug related to picture positioning

Merge pull request #121 from yktsr/dev_221

Release 2.2.1

Merge pull request #108 from yktsr/dev-220

Release 2.2.0

Merge pull request #96 from yktsr/message-events

ver.2.1.0

Merge pull request #89 from yktsr/83-bugfix-operand-of-switches-and-v…

…ariables

83 bugfix operand of switches and variables

Merge pull request #76 from yktsr/fixed-the-help-document

fixed the help document

Merge pull request #65 from yktsr/64-wrong-line-no

#64 delete showing line-no when syntax error