bump highline dep

CHANGELOG.md

@@ -12,7 +12,7 @@ Docs:
 * Document how to run the code (#186)
 
 Chores:
-* Bumped deps: Pango et al. to 3.3.6, Cairo to 1.16.4, Nokogiri to 1.10.3
+* Bumped deps: Pango et al. to 3.3.6, Cairo to 1.16.4, Nokogiri to 1.10.3, Highline to 2.0.2
 
 Compatibility:
 * A LOT more pre-defined colors built into Cairo. Some of the named colors got redefined with the upgrade to the latest Cairo. This means that named colors like `:gray` and `:green` may look slightly different.

squib.gemspec

@@ -33,7 +33,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'classy_hash',           '0.2.1'
   spec.add_runtime_dependency 'gio2',                  '3.3.6'
   spec.add_runtime_dependency 'gobject-introspection', '3.3.6'
-  spec.add_runtime_dependency 'highline',              '1.7.10'
+  spec.add_runtime_dependency 'highline',              '2.0.2'
   spec.add_runtime_dependency 'mercenary',             '0.3.6'
   spec.add_runtime_dependency 'nokogiri',              '1.10.3'
   spec.add_runtime_dependency 'pango',                 '3.3.6'