minor and major reworks: rename swb to SRU, add a test for pdf parsing

major: rework mail to send mail as plaintext instead of html, preventing the bleed-in of html text

src/logic/__init__.py

@@ -1,6 +1,35 @@
-from .dataclass import ApparatData, BookData, Prof, Apparat, ELSA
+__all__ = [
+    "custom_sort",
+    "sort_semesters_list",
+    "APP_NRS",
+    "PROF_TITLES",
+    "SEMAP_MEDIA_ACCOUNTS",
+    "csv_to_list",
+    "ELSA",
+    "Apparat",
+    "ApparatData",
+    "BookData",
+    "Prof",
+    "Semester",
+    "SemapDocument",
+    "elsa_word_to_csv",
+    "pdf_to_semap",
+    "word_docx_to_csv",
+    "word_to_semap",
+    "ZoteroController",
+    "eml_to_semap",
+]
 from .c_sort import custom_sort, sort_semesters_list
 from .constants import APP_NRS, PROF_TITLES, SEMAP_MEDIA_ACCOUNTS
 from .csvparser import csv_to_list
-from .wordparser import elsa_word_to_csv, word_docx_to_csv, word_to_semap, SemapDocument
+from .dataclass import ELSA, Apparat, ApparatData, BookData, Prof
+from .semester import Semester
+from .wordparser import (
+    SemapDocument,
+    elsa_word_to_csv,
+    pdf_to_semap,
+    word_docx_to_csv,
+    word_to_semap,
+)
+from .xmlparser import eml_to_semap
 from .zotero import ZoteroController