* Replace all `np.int` instances with just `int`.

Update for numpy int deprecation.

MNT: Replace master with main

MNT: Update codecov-action version to v2

Update ci_tests.yml

Fixes to build_docs

to match the docs.

Save location details to Observer instance to match the docs.

Update and rename CITATION to CITATION.bib

TST: Update Action versions

Adding MissingConstraintWarning warning

This commit removes the redundancy and consequent Matplotlib UserWarning when plotting. It is only necessary to define fmt='-', since defining linestyle='-' is redundant and produces an unnecessary warning.

…es-fixed-redundancy

Removed redundancy between 'fmt' and 'linestyle' when using plot_date

Enabled calculation of lunar and solar transit

Enabled calculation of lunar and solar transit

Finer control over sidereal time in parallactic_angle

Tweaks to rtd build

tweaks to rtd build

This will allow viewing charts for multiple targets (seems to be more consistent with the tutorial text).

Tutorial: fix indentation to plot multiple charts

check axes before draw. Now multiple targets can be plotted in one sky map.

Fix plot_sky