This is the current development version.
- Made Python3 compliant
- Feature: Vistache extended to left- and right-whitespace stripping, e.g. `Hello {{- 41 + 1 -}} World` returns `Hello42World`. The `-` after the `{{` or in front of the `}}` indicates that whitespaces in the raw block before or after will be stripped.
- Feature: Vistache extended to multiple `{{|}}`-blocks with different conditions
- Feature: New function `lfill()` and `rfill()` implemented to fill strings with fill chars.
- Feature: New function `round()` for decimal rounding