Add Sen. Kelly Loeffler, update Sen. Perdue to senior, add more fields to new-member-template.yaml

Ran senate_contacts.py too for the office, website URL etc.

legislators-current.yaml

@@ -34164,7 +34164,7 @@
     end: '2021-01-03'
     state: GA
     class: 2
-    state_rank: junior
+    state_rank: senior
     party: Republican
     url: https://www.perdue.senate.gov
     address: 455 Russell Senate Office Building Washington DC 20510
@@ -40246,3 +40246,33 @@
     address: 2333 Rayburn House Office Building; Washington DC 20515-3303
     office: 2333 Rayburn House Office Building
     phone: 202-225-3415
+- id:
+    bioguide: L000594
+    lis: S405
+    fec:
+    - S0GA00526
+    govtrack: 456790
+    wikipedia: Kelly Loeffler
+    wikidata: Q76570207
+    ballotpedia: Kelly Loeffler
+  name:
+    first: Kelly
+    last: Loeffler
+    official_full: Kelly Loeffler
+  bio:
+    gender: F
+    birthday: '1970-11-27'
+  terms:
+  - type: sen
+    start: '2020-01-06'
+    end: '2020-11-03'
+    how: appointment
+    end-type: special-election
+    state: GA
+    class: 3
+    party: Republican
+    state_rank: junior
+    url: https://www.senate.gov/senators/116thCongress/LoefflerKelly.htm
+    address: 131 Russell Senate Office Building Washington DC 20510
+    office: 131 Russell Senate Office Building
+    phone: 202-224-3643

misc/new-member-template.yaml

@@ -52,6 +52,9 @@
   - type: sen
     start: '2015-01-03'    # date of swearing in
     end: '2021-01-03'      # always a future Jan 3, until a death/resignation
+    how: appointment       # for senators appointed by the governor only
+    end-type: special-election # when "how: appointment" is used, prior to the special election,
+                               # set the "end" date to the special election date and set this flag
     state: FL              # USPS state abbreviation
     class: 1               # copy from the senator this person is succeeding
     party:                 # Republican, Democrat, Independent