Update libxml requirement from 0.2.12 to 0.3.0

[dependabot]

Updates the requirements on libxml to permit the latest version.

Changelog

Sourced from libxml's changelog.

[0.3.0] 2021-27-05

• Change Parser::parse_file/string_with_encoding to Parser::parse_file/string_with_options.

• Introduce ParserOptions which encapsulates the forced encoding setting together with libxml2s HTML and XML parser options.

• For systems without a pkg-config capability, we now use the LIBXML2 environment variable to detect an installed libxml2 toolchain. (thanks @​przygienda !)

[0.2.16] 2021-31-01

Added

• More element-oriented methods: get_next_element_sibling, get_prev_element_sibling, get_last_element_child, added to both Node and RoNode.
• Document::ronode_to_string for printing read-only nodes
• RoNode::node_ptr for getting the internal libxml2 raw pointer of a read-only node

[0.2.15] 2020-28-09

Thanks to @​JoshuaNitschke for contributing OS-based package detection for the native libxml2! Also thanks to @​coding-yogi, @​ignatenkobrain and @​simoin for investigating platform-specific issues with this crate, some of which expect resolution in upcoming versions.

Added

• Support for x64-Windows use via the vcpkg package manager (with new CI monitoring via appveyor).

Changed

• Added back an Error trait implementation for XmlParseError

Removed

• Dropped a large number of memory layout tests that were auto-generated by bindgen, until we have a more sophisticated test-generation setup that can enforce multiple architectures. Ideally this has no day-to-day impact and just makes portability easier in the short-term.

[0.2.14] 2020-27-03

Changed

More consistently use c_char to successfully compile on ARM targets

[0.2.13] 2020-16-01

Thanks to @​jangernert for the upgrades to Document serialization. Thanks to @​lweberk for contributing the Schema featureset and to @​cbarber for refining the FFI interop.

Added

• Document::to_string_with_options allowing to customize document serialization
• Document::SaveOptions containing the currently supported serialization options, as provided internally by libxml
• Schema holding and managing xmlSchemaPtr as created while parsing by SchemaParserContext
• SchemaParserContext holding source of XSD and parsing into a Schema while gathering and –in case returning– errors that arise from the XSD parser across the FFI to libxml
• SchemaValidationContext holding the Schema from resulting SchemaParserContext parse and offering validation methods for Document, Node or file path to XML, while gathering and –in case returning– validation errors from the XML validator across the FFI to libxml

... (truncated)

Commits

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[dependabot]

Superseded by #17.