📝 Use relative paths instead of absolute ones

If one day someone decides to rename a package name it can be done
without additional fuss.

Author: sprytnyk

plerr/__main__.py

@@ -1,6 +1,6 @@
 """plerr entrypoint."""
 
-from plerr import cli
+from . import cli
 
 if __name__ == '__main__':
     cli.main()

plerr/cli.py

@@ -8,7 +8,7 @@
 from pygments.lexers import MarkdownLexer
 from pygments.formatters import TerminalFormatter
 
-from plerr import __version__
+from . import __version__
 
 
 def main():