Fortran fpm(1) does not take ver= keyword on dependencies

[urbanjost]

In the Fortran version if you use ver= with a dependency it fails

[dependencies.M_CLI2]
git = "https://github.com/urbanjost/M_CLI2.git"
ver = "a177b0077819571815fa6a8da6980bcb45443858"

fpm run --args build
Key ver is not allowed in dependency M_CLI2
ERROR STOP 1

Error termination. Backtrace:
#0 0x7fc87742e131 in ???
#1 0x7fc87742ecd9 in ???
#2 0x7fc87742fe9b in ???
#3 0x404570 in fpm_MOD_cmd_build
at src/fpm.f90:101
#4 0x401977 in MAIN
at app/main.f90:22
#5 0x401a20 in main
at app/main.f90:8

[awvwgk]

For reference, the bootstrap fpm will only use rev, branch or tag for git dependencies.

fpm/PACKAGING.md

Lines 647 to 657 in 1a394d7

	You can also be specific about which version of a dependency you’d like. You can
	specify a branch to use like
	`helloff = { git = "https://gitlab.com/everythingfunctional/helloff.git", branch = "master" }`,
	or a tag like
	`helloff = { git = "https://gitlab.com/everythingfunctional/helloff.git", tag = "v1.2.3" }`,
	or even a specific commit like
	`helloff = { git = "https://gitlab.com/everythingfunctional/helloff.git", rev = "a1b2c3" }`.
	You can even specify the path to another folder, if for example you’ve got
	another fpm package in the same repository. Like this:
	`helloff = { path = "helloff" }`. Note that you should *not* specify paths
	outside of your repository, or things won’t work for your users.

Everything else can be specified, but is silently ignored in bootstrap fpm.