Resolution of NameError (undefined local variable or method `doc')
Resolution of NoMethodError (undefined method `instance')
Report an informative error message when a converter cannot be resolved
Add test to assert that an exception is raised when a converter cannot be resolved
resolves #836 and #846

- use new Opal preprocessor guards (i.e., unless RUBY_ENGINE == 'opal')
- use unicode escape sequence for passthrough placeholders and null character
- fix several checks where a value is empty string instead of null in JavaScript
- consolidate opal_ext require to a single line
- move autoload declarations outside of Asciidoctor module block
- use qualified name for top-level classes in AbstractNode
Merge pull request #950 from mojavelinux/issue-836

resolves #836 and #846
update instructions for testing a single method
resolves #892 match word characters defined by Unicode

- replace \w with character class to match word characters as defined by Unicode
- use Unicode match groups for Ruby >= 1.9.3
- rename regex character class constants
- don't filter out word characters outside of ASCII range in section id
- add tests for matching word characters outside of ASCII range
- Opal compatibility fixes and cleanups
Merge pull request #951 from mojavelinux/issue-892

resolves #892 - match word characters defined by Unicode
fix path resolution for include paths

- introduce PWD environment variable to set pwd
- use qualified path for top-level include under Opal if PWD does not match base_dir
set version to 1.5.0.preview.7 [ci skip]
Release 1.5.0.preview.7
prepare for next development iteration [ci skip]
Merge pull request #934 from jljouannic/pygments-errors

Fix for errors with pygments source-highlighter
resolves #909 - add -t flag to cli to control output of timing information
minor optimization in timings check
update manpage to reflect updates in 1.5.0
resolves #925 set starting number in ordered list for docbook
Fix "sh [: unexpected operator" when running run-tests.sh

POSIX sh doesn't understand == for string equality, as that is a bash-ism. Use = instead.
http://stackoverflow.com/questions/3411048/unexpected-operator-in-shell-programming
Adds id attribut to link