Alpha Release for showcase at RSNA 2021

Bug fixes for a new version.

Available binaries (download at NITRC):

Platform (x64)	Link
Windows	https://www.nitrc.org/frs/downloadlink.php/12376
Linux	https://www.nitrc.org/frs/downloadlink.php/12374
macOS	https://www.nitrc.org/frs/downloadlink.php/12375

What's Changed

• updated version by @sarthakpati in #1353
• Version updated for models by @sarthakpati in #1356
• Version updated for next release by @sarthakpati in #1358
• 1359 by @sarthakpati in #1360
• Feature Extraction updates by @sarthakpati in #1362
• Direction cosine and spacing tolerance added by @sarthakpati in #1365
• addressing #1366 by @sarthakpati in #1367
• Perfusion Alignment fixes by @sarthakpati in #1363
• Plotting for perfusion alignment by @ashishsingh18 in #1370
• TrainingModule parameter changes by @AlexanderGetka-cbica in #1371
• 1369 by @sarthakpati in #1372
• added discussion section by @sarthakpati in #1381
• 1391 by @sarthakpati in #1392
• Perfusion PCA updates by @ashishsingh18 in #1389
• add codacy badge by @ashishsingh18 in #1404
• Fix #1405 by @AlexanderGetka-cbica in #1406
• Version updated and a minor FE fix by @sarthakpati in #1394
• Some dicom-related fixes by @sarthakpati in #1409
• added 1% tolerance for feature extraction by @sarthakpati in #1414
• Testing CS's PR from my fork by @sarthakpati in #1419
• Update Utilities.cxx by @chiharusako in #1418
• Try pointing NITRC upload to new location by @AlexanderGetka-cbica in #1420
• Updating links by @sarthakpati in #1426
• removing tests to ensure azure finishes builds by @sarthakpati in #1425
• Update Dockerfile to correct entrypoint by @AlexanderGetka-cbica in #1428
• Documentation updated by @sarthakpati in #1429
• DICOM read fix by @sarthakpati in #1431
• Traning module revamp and several bugfixes by @AlexanderGetka-cbica in #1442
• Documentation updates by @sarthakpati in #1445

Full Changelog: 1.8.1...1.8.2.Alpha