prep for 0.1.2 release

- update history
- bump versions from dev/SNAPSHOT
fix up maven release notes
bump version to 0.1.3
extract isMacro helper in typer
add helper for expanding and replacing macros
typer formatting
move debugging module into test_helper
Merge branch 'master' into bootstrap_with_new_compiler

Conflicts:
	src/org/mirah/tool/mirahc.mirah
	test/jvm/bytecode_test_helper.rb