Fix type in error message variable interpolation
Add jigsass-mq-sort-length-breakpoints function.
Add jigsass-mq-get-breakpoint function to check if a named breakpoint is defined.
Prepare for deprecation of _get-default-breakpoint.
Add jigsass-get-default-breakpoint, and make _get-default-breakpoint an
alias to it.
Add a deprecation warning to _get-default-breakpoint.
Add tests for jigsass-get-default-breakpoint.
Update documentation.
Don't generate (max-width: 0) media queries
Fix a typo in name of static breakpoint
Fix a bug in max-width media queries
- Fix bug which caused meaningless media queries to be outputted
- Fix tests for meaningless media queries
Check for dependencies, but don't directly import them
Store the name of the currently active min-width breakpoint in
$jigsass-mq-active-breakpoint