Make changelog adhere to Common Changelog #5

Annotations

1 error and 10 warnings

⚠️ Pattern './Arduino-SDI-12_Dependencies_2.2.0.zip' does not match any files.

Error: The 'added processor timer for greater stability' section under version 1.3.1 does not contain any listed changes under the heading.

Error: The '_unset prescalers_' section under version 1.3.3 does not contain any listed changes under the heading.

Error: Only 'fixed, security' sections are allowed for version 1.3.3.

Error: The '_timer class_' section under version 1.3.4 does not contain any listed changes under the heading.

Error: Only 'fixed, security' sections are allowed for version 1.3.4.

Error: The '_removed samd tone conflict_' section under version 1.3.5 does not contain any listed changes under the heading.

Error: Only 'fixed, security' sections are allowed for version 1.3.5.

Error: The '_fixed extra compiler warnings_' section under version 1.3.6 does not contain any listed changes under the heading.

Error: Only 'fixed, security' sections are allowed for version 1.3.6.

Error: Only 'added, removed, changed, deprecated, fixed, security' sections are allowed for version 2.1.0.