pmt: initial 1.5.0 update

CHANGELOG.md

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+#### Version 1.5.0 (code 150):
+   - provide the recognition feature unknown flags to the assembly system
+   - bring the flash feature
+   - clean the unnecessary code (variables etc.)
+   - provide a more modular code
+   - go to the change named project (Partition backupper (pbt) to Partition Manager (pmt)
+
+|   END OF VERSION 1.5.0 CHANGELOG   |
+|------------------------------------|
+