Provide checksum with release files

It would be nice to provide the checksum of release files so that a script (Bash, Python, ...) could check the download was correct.

As an example from Qt & bash :

QT_INSTALLER="qt-opensource-linux-x64-$VERSION.run"
QT_INSTALLER_URL="https://download.qt.io/official_releases/qt/${VERSION_URL}/$VERSION/${QT_INSTALLER}"
QT_CHECKSUM_FILE="md5sums.txt"
CHECKSUM_URL="https://download.qt.io/official_releases/qt/${VERSION_URL}/$VERSION/${QT_CHECKSUM_FILE}"

I put here some MD5SUMs :

MD5SUM 3.3.8

dc352b8c98797c71470b58b52fa8a4ce  eigen-3.3.8.tar.gz
432ef01499d514f4606343276afa0ec3  eigen-3.3.8.tar.bz2
fda46472d005379246eb44b54b1e9ee7  eigen-3.3.8.tar
d4419c8818824cefc831e960c18a6f64  eigen-3.3.8.zip

MD5SUM 3.3.7

9e30f67e8531477de4117506fe44669b  eigen-3.3.7.tar.gz
b9e98a200d2455f06db9c661c5610496  eigen-3.3.7.tar.bz2
71e070be3b800ecf620a561e2b1010c7  eigen-3.3.7.tar
888aab45512cc0c734b3e8f60280daba  eigen-3.3.7.zip

MD5SUM 3.3.6

e47f113ab6dcdae072c2a36ea842e657  eigen-3.3.6.tar.gz
2d3e5cc05a8b618eb81464cc100d223b  eigen-3.3.6.tar.bz2
a4aae519998eb46b9eaf1cd6dfca4bd3  eigen-3.3.6.tar
7810f0b246c5a0b465327fb25a95af9d  eigen-3.3.6.zip

MD5SUM 3.3.5

e318d9ec026cb36ff7a352cb82ec460b  eigen-3.3.5.tar.gz
746889d56c7b01536010a51176ff2233  eigen-3.3.5.tar.bz2
773cbb8bdafa4ea00ad6ed588a9c3863  eigen-3.3.5.tar
12a85a98418ed1d6ca688612e12b0d82  eigen-3.3.5.zip

MD5SUM 3.3.4

7bff43034070a626687d901f4c8f54a0  eigen-3.3.4.tar.gz
6e74a04aeab3417120f1bdef6f3b4881  eigen-3.3.4.tar.bz2
c2cea82c24fb16848592ba6e980fe838  eigen-3.3.4.tar
b671f84befa57e6272cdd41ceaa08c16  eigen-3.3.4.zip