v0.10.0

A new release with many improvements. Some highlights:

• Support for list recombinations by @AltGr in #568
• Add a few optimisations for combined list operations by @AltGr in #570
• Allow access to intermediate variable states by @AltGr in #578
• Syntax: add keywords in front of list filtering / arg-extremum by @AltGr in #580
• Fix LaTeX literate output with tests by @AltGr in #581
• Allow generation of one latex file from multiple sources, and fixes by @AltGr in #583
• Small ocaml/js output rehaul by @AltGr in #582
• Support externals in scalc, correctly output them in Python by @AltGr in #584
• Allow "output subscopes" ; unify the internal representation of subscopes by @AltGr in #597
• Rework the Message module interface by @AltGr in #601
• Improve message formatting throughout by @AltGr in #602
• Support for structure updates by @AltGr in #603
• Support for direct tuple member access by @AltGr in #604
• Improvements around external modules and error handling by @AltGr in #605
• Update syntax highlighting rules and cheat-sheets by @AltGr in #606
• Add env variables to set flags -O, --avoid-exceptions, --trace by @AltGr in #607
• Unify runtime error handling by @AltGr in #611

Full Changelog: 0.9.0...0.10.0