update some dependency specifications
fixes #87: resolve core modules consistently
update to CoffeeScriptRedux version 2.0.0-beta8
Version 0.9.5
Update esmangle and escodegen

esmangle 1.0.0 addresses https://github.com/mozilla/sweet.js/issues/138
Merge pull request #90 from Constellation/update-es-tools

Update esmangle and escodegen
rebuild using new CSR version
Version 0.9.6
update dependencies
fixes #91: add amd support through --amd flag
fixes #92: allow handlers given via CLI to be resolved relative to CWD
Version 0.9.7
makefile: remove redundant -e flags

-p implies -e, since -p means "evaluate script and print result".
Merge pull request #93 from davidchambers/makefile

makefile: remove redundant -e flags
makefile: add missing .PHONY declarations
Merge pull request #94 from davidchambers/makefile

makefile: add missing .PHONY declarations
makefile: replace unnecessary use of xargs
makefile: use semver command-line utility
Merge pull request #96 from davidchambers/semver

makefile: use semver command-line utility
Merge pull request #95 from davidchambers/makefile

makefile: replace unnecessary use of xargs