V0.3.11

There has been much more progress than anticipated, and most features needed to reach v0.4.1 have been filled in already.
This release is to make sure vs can properly use the newly supported syntax in its code and examples.
Subsequent milestones have been rescheduled, and next new branch v0.4.x will be mostly for consolidation, documentation and to incrementally improve the quality of code.
As such, I am splitting this release here, leaving the two leftover commands for v0.3.13.

New features

• Introduced include to load more template files. Please, notice that checks to avoid circular dependencies are to be performed externally.
• All the remaining prop-based commands.
  • value
  • prop
  • for
  • for-prop
• Loading the environment of a preprocessor is now possible via load_env.
• Improved handling of some expressions making them less verbose.
• Better (and colourful) logging!

Bug fixing

• Fixed several broken maths operations like *.

Breaking changes

The interface of preprocessor was changed once again to support the XML loader function.
Minimal changes are expected downstream, based on your prior usage.