version 0.7.1
Merge branch 'master' of ssh://bitbucket.org/tyskdm/getgasexternfiles
add wil extern file.
add wil extern file.
Merge branch 'dev/1.0' of ssh://bitbucket.org/tyskdm/getgasexternfiles into dev/1.0
replace wil.js and wil.ext.js to latest version.
to be type-checkable about WIL, and fix type casting problem.
fix type check 'Number' problem.
update gas.ext.js by latest script.
release version 0.7.2
update pointer to latest extern file in README.md