add version

liana/__init__.py

@@ -1,13 +1,4 @@
-import os
-import pathlib
-HERE = pathlib.Path(__file__).parent.parent
-
-with open(os.path.join(HERE, 'pyproject.toml'), 'r') as toml_file:
-    for line in toml_file:
-        if line.strip().startswith('version'):
-            version = line.split('=')[1].strip().strip('"')
-            break
-__version__ = version
+__version__ = '1.0.3'
 
 from liana import method as mt, plotting as pl, resource as rs, multi as mu, utils as ut, testing