Merge branch 'release/2.3.0' into dev
Reformat LICENSE file.
set default value for render context to empty array
Update docs, variable name for render passthrough.
Fix this mention too :)
Fix tokenizing when `mbstring.func_overload` enabled.

Fixes #144
Bump to v2.3.1
Merge branch 'release/2.3.1'
Merge pull request #1 from bobthecow/master

Merged