don't crash if you can't get the poetry instance (#7)

* don't crash if you can't get the poetry instance

* fixes and tests

* .

* .

---------

Co-authored-by: Ben Avrahami <wouldntyouliketoknow@weather.boy>

Author: bentheiii

CHANGELOG.md

@@ -1,4 +1,8 @@
 # Poetry-Lock-Listener Changelog
+## 0.2.4
+### Fixed
+* if poetry instance cannot be retrieved, the plugin will now disable itself instead of crashing
+* verbosity levels are now inclusive
 ## 0.2.3
 ### Added
 * the context is now sent to file-style callbacks, same as python hooks