v0.12.8

• send component's metadata to compilers
• fix bit tag with --force flag to force tagging when exceptions occurred during a test
• fix bit test error message to display the actual exception if occurred
• improve error message of bit tag --verbose when tests failed to include tests results
• improve handling of errors from compilers which return promises
• merge process.env from the main process to tester process fork
• symlink tester env in isolated envs
• bug fix - tests files were ignored during bit add when they're weren't part of the files array and .gitignore contained a record with leading exclamation mark