Merge branch 'atn-profiler' into 4.2.3-dev
Merge branch 'atn-profiler' into 4.2.3-dev
add more utility functions
Merge branch 'atn-profiler' into 4.2.3-dev
make grammar region indexes tokens not char indexes.  Get start/stop for blocks if subrules.
Merge branch 'atn-profiler' into 4.2.3-dev
add tool-template and generatedcode-runtime version compatibility check. Target authors add a VERSION template and supply a RuntimeMetaData.checkVersion() method.
Merge branch 'runtime-tool-version-sync' into 4.2.3-dev
Templates LL1PlusBlock and LL1StarBlock were not used. removed. added test for LL1OptionalBlock.
Merge branch 'codegen-tests' into 4.2.3-dev
Merge branch '4.2.3-dev' of github.com:parrt/antlr4 into 4.2.3-dev