Correctly format numeric values.

Adds support for multiple, delimited secret paths with the -path and VAULT_PATH arguments.

Will only attempt to renew renewable tokens.

Adds support for --generate-config parameter.

Fixes a bug that would repeatedly try to renew a token that failed to renew.

This release includes automatic renewal of the token that is provided to the client. Binaries should be slightly smaller as the one external dependency has been removed.

• Fixes signal handling so that the child process is correctly held onto and passed signals.
• Add a test script in test/signal_echo.go for verifying signal catching.