The original code crashed when mrb->backtrace.n grew to 16.

It looks like the logic to reallocate the backtrace was flawed,
based on the wrong variable (loc_raw->i, which, as I have verified,
decreases from 16 to 0 instead of increasing)

I am not sure if this is the correct fix

Avoid Error when Compiling with -std=c99 flag

[255, 255, 255, 255, 255].hash raises "can't convert Float into Integer"

Fix segfault when `eval("__FILE__")` is executed

Fix bug in mruby-test gem (fix #3094)

Add more limitations

  - defined?
  - alias on global variables
  - Operator modification
  - Kernel.binding missing

In an used build path mruby-test wasn't updating mrbtest.c in the
case that the mgem selection was changed. This lead to:
  - a missing reference in case a GEM was removed
  - ignoring all new GEMs added to the build configuration

This fix keeps track of the active gems and demands a rebuild of
mrbtest.c in case that the gem selection changed.

Add toolchain support for OpenWRT

Addition to mruby limitation documentation

Limitations

Fix missing dependency on mruby-print to support 'puts'

Add String#rjust to mruby-string-ext

Fix a typo