paulgovan/eAnalytics: eAnalytics 0.4

New Features

• Electric and Oil industry tabs now include a Performance tab with histogram and heatmap visualizations.
• Electric and Oil industry tabs now include an Explorer tab with a GoogleVis motion chart for tracking trends over time.
• Added a company filter to the Trends tab for Electric, Gas, and Oil industries.
• Added a "Companies by Industry" bar chart to the home page dashboard.

Minor Improvements and Bug Fixes

• Updated industry menu icons (Electric → bolt, Hydropower → tint, Natural Gas → fire, Oil → flask).
• Refreshed underlying energyr data.
• Updated author contact email in DESCRIPTION.
• Updated RoxygenNote to 7.3.3.

Infrastructure

• Added R-CMD-check.yaml for matrix CI testing across macOS, Windows, and Ubuntu (release/devel/oldrel-1).
• Added pkgcheck.yaml for rOpenSci automated package checks.
• Upgraded pkgdown.yaml actions to current versions.
• Removed obsolete r.yml workflow.
• Added shinytest2 and testthat (>= 3.0.0) to Suggests in DESCRIPTION.