Rename formulas columns parameters to "variables" in received JSON.
Rename items start & end of dated formulas to start_instant & stop_instant.
Add missing import and simplify test.
Change informations and thumbnail for mes-aides.gouv.fr.
Add mes-aides.gouv.fr contributors.
Correct English version of contributors.
Factorize Ractive-based tools to simplify its sharing with tunisian templates.
Don't fail when decomposition tree is missing.
Upgrade Ractive (to 0.6) and correct syntax of Ractive-based trace template.
Correct typo.
Handle periods in tracebacks.
Add support for POSTed simulation in trace and use calculate instead of simulate.
Remove unused variable.
Add period of variables to trace.
Add API URL parameter to trace.
Add support for GET in trace.
Fix flake8 errors
Add help link to variable explorer
Port trace tool to React
Optimize colorization