0.5.0: Lint function argument count

1. Add function argument linting
2. Add function argument tooltip
3. Fix code folding
4. Add more colors
5. Add more tests

0.4.2

Fix property access on method result

0.4.0

1. Refactor AST grammar to allow better linting & autocompletion
2. Add support for objects
3. Add support for types

0.3.0

1. Implement Ctrl+Space to open autocompletion menu with no input
2. Show linter error when multiple variables in row

0.2.3

Add tooltip etc

0.2.2

Add basic linting

0.2.1

Don't offer autocompletion when there's an open string

0.1.13

Initial npm release

0.1.12

Fix autocomplete after scalars

0.1.11

Add autocomplete etc