support japanese message output
Merge pull request #44 from cubicdaiya/langsupport/ja

support japanese message output
Fix not up-to-date example in Readme

for custom extensions
Merge pull request #45 from mindreframer/patch-1

Fix not up-to-date example in Readme
fix: error assertion now takes a callable argument, instead of only functions
add: stub assertion (same as spy)
Merge pull request #46 from Tieske/callable_and_stub

2 minor updates
version bump
Merge tag 'v1.7.0' of github.com:Olivine-Labs/luassert into update
Update to v1.7