* Add support for cloud sync, specifically GCP
This adds generic support for sync to cloud services, with specific
spuport for GCP. Adding others -- so long as they support a
compare-and-set operation -- should be comparatively straightforward.
The cloud support includes cleanup of unnecessary data, and should keep
total space usage roughly proportional to the number of tasks.
Co-authored-by: ryneeverett <ryneeverett@gmail.com>
In #3118 @ryneeverett mentioned that "key" suggests that this is a
secret, when in truth it's just a user identifier. So "ID" is a better
word for it than "key".
This removes use of gnutls and the TLS implementation, which is no
longer needed (task synchronization is handled via Taskchampion, which
uses `reqwest`, which handles TLS via other Rust dependencies). This
incidentally removes the following config options:
* `debug.tls`
* `taskd.ca`
* `taskd.certificate`
* `taskd.ciphers`
* `taskd.credentials`
* `taskd.key`
* `taskd.server`
* `taskd.trust`
This also drops support for the transitional `json.depends.array`
configuration value, which has not been necessary since ~2016.
As with tags, dependencies are stored in both a "combined",
comma-separated format (for compatibility) and in an
attribute-per-dependency format (for the future).
Every configuration parameter can be overwritten for the
current context by setting the parameter:
context.<name>.rc.<parameter> = <value>
in the config file. This allows for example to set a custom
report for each context.
This adds a note to the man page to properly escape filters containing
spaces. It also fixes the unittests to reflect this.
One of the unittests contained an alternative syntax as discussed in
TW-1479 (#1505). It has been extracted into its own unittest and marked
as an expected failure because it is currently not supported.
Per the beginning of the man page, the summary line should give the default value. This isn't the case in a few places, so I changed them. (No guarantees I found them all.)
