1.3.0 development

See merge request !2

Release 1.2.3

Closes #8, #2, and #1

See merge request !1

especially it is not clear why the change of cc19f was done at all.

This avoids the problem of having a fully duplicate StreamFunction Library
in the compiler backend

Bug introduced by commit fb7d4e.

The code-part that was moved by this commit was always executed previously.
This caused the Interpreter to use the CompilerStdLibIncludeResolver which
in turn caused compilation errors.

indexi ist used instead of subExpi

scopt 4.0.0-RC2 raises "mutation occurred during iteration" on Scala 2.13.6

Up to now flushes were only possible for the last timestamp

If TeSSLa code is compiled into Scala API code (i.e. no Reading/Writing
from/to stdio) the name of the output function is generated from the
output's @name annotation. However this annotation may contain signs
which are forbidden in a Scala variable name, a colon for example.
This commit replaces them by _.

Migrate deprecated syntax and do not use antlr options for subprojects which do not use antlr.

This newer version of the scala compiler is capable of Java Byte Code Level 60 as used by Java 1.16.

Add rules to the parser to parse tessladoc comments in places where those are not allowed, too. These lonely tessladoc comments are then ignored like normal comments, but a warning is raised in the core compiler.

This closes #8

Now also accepts events at timestamp 0