add eric to contributors
Merge pull request #613 from ericvergnaud/add-contributor

add eric to contributors
tweaks per Sam's comments. Just pushing straight to master.
I have removed all of the installation and getting started stuff from the readme and pointed them to the wiki which is easier to update.
set ant build for 4.3 using 4.2.2 (and 3.5.2)
Refactor shared load() method to BaseTest
Add regression test for #588
Fix optimizer incorrectly removing predicate transitions from the ATN (fixes #588)
Merge pull request #617 from sharwell/fix-588

Fix 588
Fix cases where file encoding was not handled properly in the tool (fixes #563)
Updated documentation and add argument validation assertion for SemPred
Fix documentation comments generated for labeled alternatives (fixes #543)
errors should display literal if no token name avail.
test profiler with generated code. dump profile information using toString as dump() no longer available.
Merge pull request #616 from parrt/test-profiler-with-generated-code

test profiler with generated code. dump profile information using toStri...
Merge pull request #621 from parrt/token-names-vs-literals-fix

errors should display literal if no token name avail.
Merge pull request #618 from sharwell/fix-563

Fix cases where file encoding was not handled properly in the tool
Merge pull request #619 from sharwell/sempred

Updated documentation and add argument validation assertion for SemPred
Merge pull request #620 from sharwell/fix-543

Fix documentation comments generated for labeled alternatives
getMinElement now supports values < 0.  Checked and shouldn't affect any uses.  subtract() from set with EOF, wiped out all negative values. added tests.