Updated README.

Author: Austin Bingham

README.md

@@ -18,19 +18,19 @@ Find the range containg the key and value of a map entry:
 
 ```python
 source_map = YAMLWhere.from_string("a: 1\nb: 42")
-assert source_map.get_range("b") == Range(Position(1, 0), Position(1, 5))
+assert source_map.get_range(Item("b")) == Range(Position(1, 0), Position(1, 5))
 ```
 
 Or get the range of just the key:
 ```python
 source_map = YAMLWhere.from_string("a: 1\nb: 42")
-assert source_map.get_key_range("a") == Range(Position(0, 0), Position(0, 1))
+assert source_map.get_range(Key("a")) == Range(Position(0, 0), Position(0, 1))
 ```
 
 Or just the value:
 ```python
-source_map = YAMLWhere.from_string("a: 1\nbb: 42")
-assert source_map.get_value_range("bb") == Range(Position(1, 4), Position(1, 6))
+source_map = YAMLWhere.from_string("a: 1\nb: 42")
+assert source_map.get_range(Value("b")) == Range(Position(1, 3), Position(1, 5))
 ```
 
 You can also look up nested locations:
@@ -41,9 +41,9 @@ yaml = """a:
         doo: hola
 """
 source_map = YAMLWhere.from_string(yaml)
-assert source_map.get_key_range("a", "b") == Range(Position(1, 4), Position(1, 5))
-assert source_map.get_key_range("a", "c") == Range(Position(2, 4), Position(2, 5))
-assert source_map.get_key_range("a", "c", "doo") == Range(Position(3, 8), Position(3, 11))
+assert source_map.get_range(Value("a"), Key("b")) == Range(Position(1, 4), Position(1, 5))
+assert source_map.get_range(Value("a"), Key("c")) == Range(Position(2, 4), Position(2, 5))
+assert source_map.get_range(Value("a"), Value("c"), Key("doo")) == Range(Position(3, 8), Position(3, 11))
 ```
 
 ### Sequences
@@ -56,17 +56,14 @@ yaml = """[1,
      indented]
 """
 source_map = YAMLWhere.from_string(yaml)
-assert source_map.get_range(0) == Range(Position(0, 1), Position(0, 2))
-assert source_map.get_range(1) == Range(Position(1, 1), Position(1, 2))
-assert source_map.get_range(2) == Range(Position(1, 4), Position(1, 7))
-assert source_map.get_range(3) == Range(Position(3, 5), Position(3, 13))
+assert source_map.get_range(Index(0)) == Range(Position(0, 1), Position(0, 2))
+assert source_map.get_range(Index(1)) == Range(Position(1, 1), Position(1, 2))
+assert source_map.get_range(Index(2)) == Range(Position(1, 4), Position(1, 7))
+assert source_map.get_range(Index(3)) == Range(Position(3, 5), Position(3, 13))
 ```
 
 ## CI/CD
 
-Bump the version like this:
+Tests will be run on every push to Github.
 
-```
-$ bumpversion patch
-$ git push --follow-tags
-```
+Use the "bump-and-publish" job in Github Actions to make new releases.