added basic syntax parsing for mail tag
added generation of mail-mockup
generating MIMEMultipart-mail and saving as eml
added syntax for specifying sender of mail
The email function is complete, parsing and synthesizing the mail works and Thunderbird can open the EML-File.
updated documentation due to added EML-output
sorry, missed a file in last commit
Changed emailtemplate to UTF-8 in order to prevent Exceptions (when using umlauts)
fix: use script basedir for emailtext.txt