diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..e4fba21
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.12
diff --git a/hello.txt b/hello.txt
new file mode 100644
index 0000000..05a682b
--- /dev/null
+++ b/hello.txt
@@ -0,0 +1 @@
+Hello!
\ No newline at end of file
diff --git a/text_codecs/alphanumeric.py b/text_codecs/alphanumeric.py
index e8cc2ea..0386c46 100644
--- a/text_codecs/alphanumeric.py
+++ b/text_codecs/alphanumeric.py
@@ -1,7 +1,25 @@
 import string
 import codecs
-from custom_codecs.register import register_codec
+
 from easybits import Bits
+import codecs
+
+def register_codec(encode, decode, name):
+    """Registers a codec so that it can later be used to encode
+    or decode strings and bytes.
+    """
+    def encode_wrapper(text):
+        return encode(text), len(text)
+
+    def decode_wrapper(data):
+        return decode(data), len(data)
+
+    def search_for_codec(query):
+        if query == name:
+            return codecs.CodecInfo(encode_wrapper, decode_wrapper, name=name)
+
+    codecs.register(search_for_codec)
+
 
 allowed_characters = string.ascii_letters + string.digits
 
diff --git a/text_codecs/ascii7.py b/text_codecs/ascii7.py
index fb24cd0..4f7e83f 100644
--- a/text_codecs/ascii7.py
+++ b/text_codecs/ascii7.py
@@ -1,5 +1,23 @@
-from custom_codecs.register import register_codec
+
 from easybits import Bits
+import codecs
+
+def register_codec(encode, decode, name):
+    """Registers a codec so that it can later be used to encode
+    or decode strings and bytes.
+    """
+    def encode_wrapper(text):
+        return encode(text), len(text)
+
+    def decode_wrapper(data):
+        return decode(data), len(data)
+
+    def search_for_codec(query):
+        if query == name:
+            return codecs.CodecInfo(encode_wrapper, decode_wrapper, name=name)
+
+    codecs.register(search_for_codec)
+
 
 def encode(text):
     """An encoder which only handles ASCII: non-ASCII characters
diff --git a/text_codecs/trevcodec.py b/text_codecs/trevcodec.py
new file mode 100644
index 0000000..90a678c
--- /dev/null
+++ b/text_codecs/trevcodec.py
@@ -0,0 +1,49 @@
+
+
+from easybits import Bits
+import codecs
+
+def register_codec(encode, decode, name):
+    """Registers a codec so that it can later be used to encode
+    or decode strings and bytes.
+    """
+    def encode_wrapper(text):
+        return encode(text), len(text)
+
+    def decode_wrapper(data):
+        return decode(data), len(data)
+
+    def search_for_codec(query):
+        if query == name:
+            return codecs.CodecInfo(encode_wrapper, decode_wrapper, name=name)
+
+    codecs.register(search_for_codec)
+
+
+CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ .,?!'"
+
+def encode(text):
+    result = Bits()
+    text = text.upper()
+    
+    for char in text:
+        if char in CHARS:
+            index = CHARS.index(char)
+            bits = Bits(index, length=5)
+            result = result.concat(bits)
+    
+    return result.bytes
+
+def decode(data):
+    bits = Bits(bytes(data))
+    text = ""
+    
+    for i in range(0, len(bits), 5):
+        chunk = bits[i:i+5]
+        if len(chunk) == 5:
+            index = chunk.int
+            text += CHARS[index]
+    
+    return text
+
+register_codec(encode, decode, "trevcodec")
\ No newline at end of file