ngx_mruby v2.2.2
- Adjust install documentation #459 @yano3
- Drop openssl 1.0.2 suppot #461 @matsumotory
- Update test target to 1.17.10 #462 @sawanoboly
- add new stable version 1.18.0 to test targets #463 @sawanoboly
- update mainline to 1.19.0 #464 @sawanoboly
- mruby/ doesn't have /git by default because mruby/ was created by git subtree #466 @yyamano