Bump mini_racer from 0.2.1 to 0.2.2

[dependabot-preview]

Bumps mini_racer from 0.2.1 to 0.2.2.

Changelog

Sourced from mini_racer's changelog.

• 26-09-2018

• 0.2.2

  • WORKAROUND: RUBY_PLATFORM is hardcoded on Ruby compile and can not be
    trusted for feature detection, use a different technique when checking for
    macOS Mojave

• 25-09-2018

• 0.2.1

  • FEATURE: Mojave macOS support

• 06-07-2018

• 0.2.0

  • FEATURE: context#call to allow for cheaper invocation of functions
  • FIX: rare memory leak when terminating a long running attached function
  • FIX: rare segfault when terminating a long running attached function
  • FIX: Reimplement Isolate#idle_notification using idle_notification_deadline, API remains the same ignisf
  • Account for changes in the upstream V8 API ignisf
  • Support for libv8 6.7

23-08-2017

• 0.1.15

  • bump dependency of libv8 to 6.3

23-08-2017

• 0.1.14

  • libv8 erronuously bumped to beta, reverted change

23-08-2017

• 0.1.13

  • Fix: amend array buffer allocator to use v8 6.0 compatible allocator ignisf

18-07-2017

• 0.1.12

  • Feature: upgrade libv8 to 5.9
  • Fix: warning when runnin with ruby warnings enabled (missed disposed initialize)

18-07-2017

... (truncated)

Commits

• 53d3f83 version bump
• 100912a FIX: allow for badly hardcoded ruby platform const
• See full diff in compare view

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[coveralls]

Coverage remained the same at 78.782% when pulling 5afa053 on dependabot/bundler/mini_racer-0.2.2 into 7020c0b on master.