Bump version to 1.2.3.

Bump version to 1.2.2.

Bump version to 1.2.1.

Bump version to 1.2.0.

Bump version to 1.1.0.

File accidentally corrupted by the previous commit.

Profile browser: several enhancements.

- UI to expand code views in profile
- Stacked histograms display
- Allow undefined values anywhere
- Show missing numeric values as empty strings

Signed-off-by: Mihai Budiu <mbudiu@vmware.com>

Bump version to 0.50.0.

Bump version to 0.49.0.

Bump version to 0.48.2.

Signed-off-by: Leonid Ryzhyk <lryzhyk@vmware.com>