Merge branch 'release/4'
Bumps version numbers for development. Refs #40.
Updates some minor details in release steps.
Removes local code in favour of submodule. Refs #41.
Finishes export layer. Refs #41.
Adds missing symbols, integrates with xcode. Refs #41.
Removes temporary hack from C init code. Refs #41.
Documents task, updates submodule with public commit. Refs #41.
Merge branch 'feature/t41_split_logic'
Removes license file from xcode project.
Fixes build_sources filename for github.
Moves database/csv format docs to logic repo. Refs #46.
Adds GoogleAnalytics external submodule. Refs #47.
Registers tracking ID with google analytics sdk. Refs #47.
Moves EHTab_vc to correct subdirectory. Refs #47.
Adds EHGai_vc for screen tracking. Refs #47.
Implements EHGai_tvc for tables. Refs #47.
Tracks other apps opened. Refs #47.
Adds tracking of importation/exportation. Refs #47.
Documents task in changes log. Refs #47.