add bump to v 1.3.0 (#142)

* fixed broken --dpi option

* fixed broken --dpi option

* added option for control of annotation scaling

* improved efficiency of pass-through args

* spell check

* major reorg of the code for readability

* split tests for plot v vcf commands

* fixed name for new test

* added cleanup for files created during tests

* added cleanup for files created during tests

* added new tests for vcf

* Update README.md

* tweaked the help output

* Update README.md

* version bump

* version bump again

samplot/__init__.py

@@ -1,2 +1,2 @@
 #!/usr/bin/env python
-__version__ = "1.2.0"
+__version__ = "1.3.0"