Fix word detection with non-ASCII characters.

Use the unicode character property \pL together with look-behind and
look-ahead assertions rather than '\b' escape sequences (which do not work
with non-ASCII characters).
Merge branch 'hotfix-unicode-parsing' into develop
Fix region exclusion with multiple lines.

Added the 's' modifier so that the regex that detects not-to-be-linked
regions that span several lines (e.g., multiline <pre></pre> section).
Do not touch piped links in template parameters.
Prevent linking inside multiline templates.
Do not re-link links inside curly braces.
Do not link template parameters.
Change release script to amend commit.

Requires further work to properly handle the Git branching model as
described by http://nvie.com/posts/a-successful-git-branching-model
Prepare release 3.0.1.
Merge branch 'release-3.0.1'
--amend