Update generated document.

Add comment to Hash#each_pair. And change the line

Add comment about ISO.
Current place is misleading so change line No.

Add comments to Hash methods

Delete unused NameError#new. And add test.

Change to raise TypeError (Hash#merge, #merge!)

OP_ENTER fix segmentation fault

Add exception test

Remove use of mruby-proc-ext method in core test.

Pacify MSVC warnings for time.c

Refactoring test to use assert_nothing_raised.

Move `__method__` to mruby-kernel-ext since it's not ISO method.

libreadline requires libtermcap on OpenBSD.

OP_ENTER clean block object in register

Add ISO No. to String#inspect test.

Add Hash#key

Add tests for Range#to_s Range#inspect.

fix typo

Replace from include <>, to include "".

Make Array#[]= raise IndexError.

If second param is negative, Array#[] raise IndexError.

Remove `Time` defined check in mruby-time gem test.