Functional changes

• Don't use + encoding for spaces to improve compatibility with Android TOTP Applications https://github.com/pquerna/otp/pull/78
• Add new methods that expose the Algorithm and the Digits parameters from the Key URL. https://github.com/pquerna/otp/pull/74
• If 0 is passed in for .Digits, default to 6 https://github.com/pquerna/otp/pull/77

v1.3.0 contains minor changes and enhancements. All users should be safe to upgrade.

Functional changes

• Added GenerateOpts.Rand to control the random source for generating secrets https://github.com/pquerna/otp/pull/45
• Parse the Period of an OTP URL https://github.com/pquerna/otp/pull/49

Documentation changes

• Note that SHA1 should be used for compatibility with Google Authenticator https://github.com/pquerna/otp/pull/57
• Expanded Example https://github.com/pquerna/otp/pull/53

v1.2.0 of otp contains no breaking changes, and is safe for all users to upgrade.

Changes since v1.1.0:

• Add Go modules related files https://github.com/pquerna/otp/pull/40
• Expose a new .Secret field on the {hotp,totp}.GenerateOpts structs. This lets you import an existing secret instead of generating a new one. https://github.com/pquerna/otp/pull/42
• Internal change to use base32.NoPadding as an encoding rather than trimming the standard padding https://github.com/pquerna/otp/pull/41

Non-functional changes since v1.1.0:

• Upgrade Go versions tested in Travis CI https://github.com/pquerna/otp/pull/39

Most users of otp should be able to upgrade safely. I'm happy to say otp is a stable library and is being used by many groups successfully.

Changes since v1.0.0:

• #30: Increases default secret size from 10 bytes to 20 bytes. This may effect storage of newly generated secrets, eg in a SQL database backend.
• #25: Improved interoperability with broken base32 encoders.
• #31: Bugfix: Check for a zero default Digits in hotp.Generate.
• #21: Adds otp.key.URL() method.

Non-functional changes since v1.0.0:

• #27: Add additional test cases.
• #28 and #23: Update Travis CI Settings.
• #23: gofmt repo.

Thank you to all of the contributors for this release:

• @champkeh
• @clarcharr
• @pquerna
• @rohitshriwas
• @shawnps

otp has held its stable API for >24 months, figure we might as well make it official with a 1.0 release.