Update min/med/max table, ht @bertsky, OCR-D/ocrd-website#92

README.md

@@ -295,12 +295,13 @@ docker pull ocrd/all:maximum
 Usage is the same [as if you had built the image yourself](#results).
 
 This table lists which tag contains which module:
-
 | Module                      | `minimum` | `medium` | `maximum` |
 | -----                       | ----      | ----     | ----      |
 | core                        | ☑         | ☑        | ☑         |
 | ocrd_cis                    | ☑         | ☑        | ☑         |
+| ocrd_fileformat             | ☑         | ☑        | ☑         |
 | ocrd_im6convert             | ☑         | ☑        | ☑         |
+| ocrd_pagetopdf              | ☑         | ☑        | ☑         |
 | ocrd_repair_inconsistencies | ☑         | ☑        | ☑         |
 | ocrd_tesserocr              | ☑         | ☑        | ☑         |
 | tesserocr                   | ☑         | ☑        | ☑         |
@@ -314,13 +315,12 @@ This table lists which tag contains which module:
 | ocrd_segment                | -         | ☑        | ☑         |
 | tesseract                   | -         | ☑        | ☑         |
 | ocrd_anybaseocr             | -         | -        | ☑         |
+| ocrd_kraken                 | -         | -        | ☑         |
+| ocrd_ocropy                 | -         | -        | ☑         |
 | ocrd_pc_segmentation        | -         | -        | ☑         |
 | ocrd_typegroups_classifier  | -         | -        | ☑         |
 | sbb_textline_detector       | -         | -        | ☑         |
-| cor-asv-fst                 | -         | -        | -         |
-| clstm                       | -         | -        | -         |
-| ocrd_kraken                 | -         | -        | -         |
-| ocrd_ocropy                 | -         | -        | -         |
+| cor-asv-fst                 | -         | -        | ☑         |
 
 **Note**: The following modules have been disabled by default and can only be
 enabled by explicitly setting `OCRD_MODULES` or `DISABLED_MODULES`:
@@ -355,16 +355,21 @@ Modules may require mutually exclusive sets of dependent packages.
 `pip` does not even stop or resolve conflicts – it merely warns!
 
 - Tensorflow:
-   * `tensorflow-gpu==1.14.0` (required by ocrd_calamari and ocrd_anybaseocr)
-   * `tensorflow` (required by cor-asv-ann and ocrd_keraslm)
+   * version 2 (required by ocrd_anybaseocr for dewarping and page segmentation)
+   * version 1 (required by cor-asv-ann, ocrd_keraslm, ocrd_calamari and sbb_textline_detector)
+
+   The temporary solution is to require different package names:
+   - `tensorflow>=2`
+   - `tensorflow-gpu==1.15.*`
 
-   Both can be installed in parallel in different versions, but may depend on a mutually exclusive set of `tensorboard` and `tensorflow_estimator`.
+   Both can be installed in parallel in different versions, but may depend on a mutually exclusive set of `tensorboard` and `tensorflow_estimator`. (However, these latter conflicts are only cosmetic, as they are only needed for development.)
 
-   Moreover, in the future, some modules (but not others) may depend on `tensorflow>=2.0`, which again is incompatible.
 - OpenCV:
    * `opencv-python-headlesss` (required by core and others, avoids pulling in X11 libraries)
-   * `opencv-python` (required by ocrd_anybaseocr)
-   * custom build on ARM...
+   * `opencv-python` (probably dragged in by third party packages)
+
+   As long as we keep reinstalling the headless variant and no such package attempts GUI, we should be fine. 
+   Custom build (as needed for ARM) under the _module_ `opencv-python` already creates the headless variant.
 
 - ...