Updated 2021 (markdown)

2021.md

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+## 2021-07-16
+
+### *__Minutes__*
+
+* Maksim Shabunin will make announcement and OpenCV.org changes in the meantime.
+* OpenCV 5.0
+   * '3d' module depends on 'features2d'. That looks unusual for a common module. Will be discussed with Vadim next week.
+   * Rositslav is working on 3d interface. He is on vacations this week.
+* GSoC 2021
+   * GSoC PR [#3006](https://github.com/opencv/opencv_contrib/pull/3006) contains LGPL code and will be rejected.
+   * AI to all: add PRs and student evaluation status to GSoC tracking spreadsheet.
+* PRs & Issues:
+   * AArch64 semihosting: #20392 -- Alexander Alekhin will look at it next week.
+   * Add read/write functions for features2d and normalize naming convention: #20367. Most of classes inherited from cv::Algorithm do not implement FileStorage operations. Decided that the PR is useful, but should be more conservative: do not change test parameters and xml/yaml.
+   * Exception when destroyWindow is called on a non existing window: #20417. Alternative option - print warning.
+   * Java: force using of 'Ptr<>' for OpenCV classes: #2034 - JFYI
+   * Proposal: Drop Output and InputOutput arguments from Python bindings interfaces for OpenCV 5.x: #20418 -- will be discussed next time with Vadim Pisarevsky.
+   * GTK vs VLFW for 3D -- need Vadim Pisarevsky for the discussion.
+   * Message_lite.h support in DNN.
+      * The option makes sense.
+      * Need to re-generate C code from propobuf files with lite option. M.b. update protobuf.
+      * Need do check compatibility with 3.4. Make sense to propose pr to master.
+
+
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 ## 2021-07-14