Rename 'master' branch to 'main'

[tgwoodcock]

Current convention is to rename the old fashioned 'master' branch to 'main', to avoid any negative connotations with the term 'master'.

Renaming can be done easily on the central repo but any clones would also have to be updated later.

What do you think @marts?

[marts]

@tgwoodcock more than happy for you to rename the 'master' to 'main'. Go for it!

[tgwoodcock]

@marts great! I've pushed the new 'main' branch to github but I can't see the settings tab and so am not able to change the default branch from 'master' to 'main'. Could you please do that step? Instructions e.g. here

[marts]

Morning @tgwoodcock, thanks for adding the 'main' branch. I've set it as the default branch and reassigned the branch protection rules that 'master' had. Feel free to delete master if it all looks good to you.

[tgwoodcock]

Thanks @marts 👍 It looks good and I've deleted the old 'master' branch now.

[tgwoodcock]

Important info for hdf5view users

• If you have cloned or forked the repository hdf5view in the past, please carry out the following steps in your local copy to make sure that you are tracking the new default branch 'main':

# Switch to the "master" branch:
$ git checkout master

# Rename it to "main":
$ git branch -m master main

# Get the latest commits (and branches!) from the remote:
$ git fetch

# Remove the existing tracking connection with "origin/master":
$ git branch --unset-upstream

# Create a new tracking connection with the new "origin/main" branch:
$ git branch -u origin/main

• If you have installed hdf5view via pip, this does not apply and you can keep using the code as usual.