Add unit testing

Install vitest, happy-dom, and @testing-library/vue
Add lib.ts and rbtree.ts tests in tests/
Modularise some date-range-managing code from App.vue into lib.ts

1 files changed, 1 insertions, 1 deletions

diff --git a/backend/histplorer.py b/backend/histplorer.py
index 9f9e8ad..2c23b8e 100755
--- a/backend/histplorer.py
+++ b/backend/histplorer.py
@@ -41,7 +41,7 @@ class HistDate:
 	- 'month' and 'day' are at least 1, if given
 	- 'gcal' may be:
 		- True: Indicates a Gregorian calendar date
-		- False: Means the date should be converted and displayed as a Julian calendar date
+		- False: Means the date should, for display, be converted to a Julian calendar date
 		- None: 'month' and 'day' are 1 (used for dates before the Julian period starting year 4713 BCE)
 	"""
 	def __init__(self, gcal: bool | None, year: int, month=1, day=1):