Update ANTLR version

[iporres]

Update ANTLR version

[cirrostratus1]

The version also interferes with other tools like hydra that also use antlr.

[nickovic]

The reason that we use antlr4-python3-runtime>=4.5, <4.6 in setup.py is that the parser is generated using ANTLR 4.5. If we force install the version 4.9, we get warnings "ANTLR runtime and generated code versions disagree: 4.9.3!=4.5.1".

Moreover I do not see it as a robust solution, because some other applications may require other versions of ANTLR-runtime (the version 4.10 is out and does not see to be backwards compatible). Unless there is a good argument against, I would prefer to keep the version 4.5 as the default for now.

[cirrostratus1]

Is there any information regarding compatibility for antlr runtime and generated versions (I was unable to find a compatibility matrix)? If there were a more recent version that the generated version could be updated to (4.6 is from 2016) and that is compatible with multiple versions, at least some dependency conflicts with recent tools could be avoided.

[nickovic]

I could not find any compatibility information, but by trying different version, everything between v4.5 and 4.9 included seems to work, and 4.10 does not seem to be backwards compatible.

[nickovic]

As a compromise, I recompiled the parser and the lexer with ANTLR4 v4.7 (the default version in Ubuntu 18.04 LTS) and updated the setup.py accordingly. However, if one uses in the same flow two applications with ANTLR4 grammars compiled with different versions of ANTLR4, I do not see how to avoid the warning messages.