completed synthetic signal gen w/builder pattern API & tests

Author: Teque5

sigmf/__init__.py

@@ -9,7 +9,17 @@
 # matching version of the SigMF specification
 __specification__ = "1.2.6"
 
-from . import archive, archivereader, error, schema, sigmffile, utils, validate
+from . import (
+    archive,
+    archivereader,
+    error,
+    generate,
+    schema,
+    sigmffile,
+    utils,
+    validate,
+)
 from .archive import SigMFArchive
 from .archivereader import SigMFArchiveReader
+from .generate import SigMFGenerator
 from .sigmffile import SigMFCollection, SigMFFile, fromarchive, fromfile

sigmf/error.py

@@ -35,3 +35,7 @@ def __init__(self, file_path, file_type="File"):
 
 class SigMFConversionError(SigMFError):
     """Exceptions related to converting to SigMF format."""
+
+
+class SigMFGeneratorError(SigMFError):
+    """Exceptions related to synthetic signal generation."""