fix: [ifnot] fix push down filter for ifnot expression

Properly handle $__interval and $__rate_interval

Adds prettify support for quoted UTF8 label and metric names (#43)

Formatting changes

add CI workflow to run tests (#44)

change action name

upd coverage action

add CI workflow to run tests

Adds test for long sum calc

Adds tests to test longer lines

Fixes typo in lexer

Adds support for quoted UTF8 label and metric names

7703 metricsql support metric names in quotes as alternative to name …

7703 metricsql support metric names in quotes as alternative to name …

minor comments

Removed / modified some tests to exclude the case of multiple metric …

Reverted parser_example_test.go back to using standard format of metr…

Revert "Modified string output to be unescaped UTF8 chars"

Modified string output to be unescaped UTF8 chars

Duplicate metric names are now allowed

Removed extraneous comment

Fixed tests to disregard two metric names

lexer.go: automatically substitute $__interval and $__rate_interval w…

Minor tweaks to comments

Added more testing for quoted labels

Fixed bug with not checking for errors before calling isMetricNameFil…

Adds support for quoted UTF8 label names and special case label name …

a few more tests involving numbers and quotes

Initial tests for label keys to be quoted

utils.go: fix index out of range panic when too small number of arg…