chore: bump version to 5.0.0-rc0 (angular#8256)

chore: bump version to beta.12 (angular#7568)

chore: use mat in internal templates (angular#7219)

chore: create beta.10 with fix for input width specificity (angular#6711

)

chore: bump version to beta.8 w/ changelog (angular#5541)

chore: bump version to beta.7 with changelog (angular#5223)

chore: bump version to beta.6 w/ changelog (angular#4810)

chore: bump version to beta.5 w/ changelog (angular#4523)

chore: bump version to beta.4 and update changelog (angular#4511)

chore: bump version to beta.3 and add changelog (angular#3953)