let's use ANTLR4 instead of 3
See #99, release log:
- 414be57 by @yegor256: #99 aibolit fix again
- c6c90ec by @yegor256: #99 aibolit fix
- 186d7e4 by @yegor256: #99 dep off
- da59529 by @yegor256: #99 deps fixed
- 767fd4d by @yegor256: #99 antlr4, build is clean
- e279293 by @rultor: Merge branch '__rultor'
- f058e13 by @rultor: Merge branch '__rultor'
- 6057b5b by @yegor256: #97 site fix
Released by Rultor 1.69.1, see build log