Template through Unix Pipe

[chfw]

Before raising the PR, here is a check list:

• have you written unit tests for your code changes?
• have you updated the change log?
• can someone else understand your changes without your explanation?
• are you proud of your code changes?

[codecov-io]

Codecov Report

Merging #336 into dev will increase coverage by 0.08%.
The diff coverage is 97.43%.

@@            Coverage Diff             @@
##              dev     #336      +/-   ##
==========================================
+ Coverage   95.58%   95.67%   +0.08%     
==========================================
  Files          51       51              
  Lines        2584     2610      +26     
==========================================
+ Hits         2470     2497      +27     
+ Misses        114      113       -1

Impacted Files	Coverage Δ
moban/main.py	99.22% <100%> (+0.02%)	⬆️
tests/test_main.py	100% <100%> (ø)	⬆️
...sts/integration_tests/test_command_line_options.py	99.38% <96.29%> (-0.62%)	⬇️
moban/deprecated/__init__.py	86.04% <0%> (-2.33%)	⬇️
moban/file_system.py	95.31% <0%> (-1.57%)	⬇️
tests/test_reporter.py	98.48% <0%> (-1.52%)	⬇️
moban/jinja2/engine.py	100% <0%> (+1.19%)	⬆️
moban/core/moban_factory.py	98.02% <0%> (+5.26%)	⬆️

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[chfw]

jmfederico/jinja2-python-version#1

jina2-python-version is updated.