remove duplicated code

Aspidites/api.py

@@ -97,77 +97,5 @@ def create_warning(func, args, kwargs, stack, exc=Exception()):
     )
 
 
-MD5 = ".sha256"
 code = new_contract("code", lambda x: isinstance(x, ParseResults))
 
-
-@contextlib.contextmanager
-def working_directory(path):
-    """
-    A context manager which changes the working directory to the given
-    path, and then changes it back to its previous value on exit.
-    Usage:
-    > # Do something in original directory
-    > with working_directory('/my/new/path'):
-    >     # Do something in new directory
-    > # Back to old directory
-    """
-
-    prev_cwd = os.getcwd()
-    os.chdir(path)
-    try:
-        yield
-    finally:
-        os.chdir(prev_cwd)
-
-
-def checksum(fname, write=True, check=False):
-    base, name = os.path.split(fname)
-    fname_sha256 = os.path.join(base, "." + name) + ".sha256"
-
-    def read_sha256(data):
-        curr_hash = sha256()
-        chunk = data.read(8192)
-        while chunk:
-            curr_hash.update(chunk)
-            chunk = data.read(8192)
-        return curr_hash
-
-    if write:
-        with open(fname, "rb") as data:
-            curr_hash = read_sha256(data)
-            with open(fname_sha256, "wb") as digest:
-                digest.write(curr_hash.digest())
-            return pmap({curr_hash.digest(): fname}).items()[0]  # immutable
-    if check:
-        with open(fname_sha256, "rb") as digest:
-            with open(fname, "rb") as data:
-                curr_hash = read_sha256(data)
-                old = digest.read()
-                new = curr_hash.digest()
-                if new == old:
-                    print(
-                        "sha256 digest check successful: %s, %s == %s"
-                        % (fname, new.hex(), old.hex())
-                    )
-                    return new
-                else:
-                    print(
-                        "sha256 digest failure: %s, %s != %s"
-                        % (fname, new.hex(), old.hex())
-                    )
-                    return ""
-
-
-class CheckedFileStack:
-    def __init__(self, initial=None, pre_size=8192):
-        if initial is None:
-            initial = {}
-        self._files = pmap(initial, pre_size)
-        self.all_files = self._files.evolver()
-
-    def register(self, fname):
-        self.all_files.set(*checksum(fname))
-
-    def finalize(self):
-        return self.all_files.persistent()

CHANGELOG.md

@@ -1,15 +1,11 @@
 **unreleased**
 **v0.10.1**
+
 **v0.10.0**
 
 - 598f86a patch setup.py woma compile
 - c39ac21 changelog updated
 
-
-
-- 
-
-
 **v0.9.34**
 
 - a11958b refactor compiler.py for better decoupling of various writes