Update `evalexpr`, use default branch for our `resistor-calc` fork

[twelho]

Thanks to ISibboI for getting an evalexpr release with https://github.com/ISibboI/evalexpr/pull/87 out so quickly! Update the evaluator to use it right away, and also switch to the default branch for our resistor-calc fork.

[twelho]

Build fails for me with the following errors:

user@v902-81 ➜  kicad_rs git:(import-updates) ✗ cargo build
    Updating git repository `https://github.com/racklet/kicad-parse-gen`
warning: fetching `master` branch from `https://github.com/racklet/kicad-parse-gen` but the `HEAD` reference for this repository is not the `master` branch. This behavior will change in Cargo in the future and your build may break, so it's recommended to place `branch = "master"` in Cargo.toml when depending on this git repository to ensure that your build will continue to work.
    Updating git repository `https://github.com/racklet/resistor-calc.git`
warning: fetching `master` branch from `https://github.com/racklet/resistor-calc.git` but the `HEAD` reference for this repository is not the `master` branch. This behavior will change in Cargo in the future and your build may break, so it's recommended to place `branch = "master"` in Cargo.toml when depending on this git repository to ensure that your build will continue to work.
   Compiling ppv-lite86 v0.2.10
   Compiling remove_dir_all v0.5.3
   Compiling getrandom v0.2.3
   Compiling kicad_parse_gen v7.0.2 (https://github.com/racklet/kicad-parse-gen#81d58e0d)
   Compiling resistor-calc v0.1.0 (https://github.com/racklet/resistor-calc.git#9dd4c8e8)
error[E0433]: failed to resolve: use of undeclared type `ROpBuilder`
   --> /Users/user/.cargo/git/checkouts/resistor-calc-6e3a7c70cdabcd12/9dd4c8e/src/lib.rs:127:12
    |
127 |     r.calc(ROpBuilder::new().bound("R1 + R2 ~ 500").finish())
    |            ^^^^^^^^^^ use of undeclared type `ROpBuilder`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0433`.
error: could not compile `resistor-calc`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed

Looks like cargo defaults to pulling the master branch even if the default branch is switched to fix-no-expr_builder-compile in GitHub.

I don't get those warnings with cargo 1.53.0 (4369396ce 2021-04-27), the behavior has already been changed. Are you running an outdated version of Cargo by chance?

[chiplet]

Works for me as well after updating cargo to latest version and trying to build on a fresh clone.